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2686993032025 = 52137223932
BaseRepresentation
bin100111000110011101010…
…000111110001101011001
3100111212121011102210222101
4213012131100332031121
5323010430204011100
65414215413523401
7365062122633121
oct47063520761531
910455534383871
102686993032025
11946602575975
12374910643561
131664c805cb53
14940a0533c81
1549d6520886a
hex2719d43e359

2686993032025 has 27 divisors (see below), whose sum is σ = 3357772272631. Its totient is φ = 2133012227840.

The previous prime is 2686993032013. The next prime is 2686993032037. The reversal of 2686993032025 is 5202303996862.

The square root of 2686993032025 is 1639205.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (2686993032013) and next prime (2686993032037).

It can be written as a sum of positive squares in 13 ways, for example, as 2664981155529 + 22011876496 = 1632477^2 + 148364^2 .

It is not a de Polignac number, because 2686993032025 - 235 = 2652633293657 is a prime.

It is a super-3 number, since 3×26869930320253 (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1122854229 + ... + 1122856621.

Almost surely, 22686993032025 is an apocalyptic number.

2686993032025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2686993032025 is the 1639205-th square number.

2686993032025 is the 819603-rd centered octagonal number.

It is an amenable number.

2686993032025 is a deficient number, since it is larger than the sum of its proper divisors (670779240606).

2686993032025 is an frugal number, since it uses more digits than its factorization.

2686993032025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 2686993032025 in words is "two trillion, six hundred eighty-six billion, nine hundred ninety-three million, thirty-two thousand, twenty-five".

Divisors: 1 5 25 137 685 2393 3425 11965 18769 59825 93845 327841 469225 1639205 5726449 8196025 28632245 44914217 143161225 224571085 784523513 1122855425 3922617565 19613087825 107479721281 537398606405 2686993032025