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6993025 = 521321517
BaseRepresentation
bin11010101011010010000001
3111011021121221
4122223102001
53242234100
6405515041
7113303554
oct32532201
914137557
106993025
113a46a66
122412a81
1315aacb0
14d0069b
1593201a
hex6ab481

6993025 has 12 divisors (see below), whose sum is σ = 9338812. Its totient is φ = 5163840.

The previous prime is 6992983. The next prime is 6993043. The reversal of 6993025 is 5203996.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1117249 + 5875776 = 1057^2 + 2424^2 .

It is a de Polignac number, because none of the positive numbers 2k-6993025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10434 + ... + 11083.

Almost surely, 26993025 is an apocalyptic number.

6993025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6993025 is a deficient number, since it is larger than the sum of its proper divisors (2345787).

6993025 is a wasteful number, since it uses less digits than its factorization.

6993025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21540 (or 21535 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 6993025 is about 2644.4328314404. The cubic root of 6993025 is about 191.2295605195.

The spelling of 6993025 in words is "six million, nine hundred ninety-three thousand, twenty-five".

Divisors: 1 5 13 25 65 325 21517 107585 279721 537925 1398605 6993025