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70492905025 = 52531012
BaseRepresentation
bin100000110100110110…
…1000101111001000001
320201221202211121110021
41001221231011321001
52123332140430100
652214535333441
75043610543354
oct1015155057101
9221852747407
1070492905025
11279944529a4
12117b3b21281
1368555b722a
1435aa28229b
151c78a26a1a
hex1069b45e41

70492905025 has 9 divisors (see below), whose sum is σ = 87412848393. Its totient is φ = 56393262000.

The previous prime is 70492905001. The next prime is 70492905031. The reversal of 70492905025 is 52050929407.

The square root of 70492905025 is 265505.

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

It can be written as a sum of positive squares in 4 ways, for example, as 4328718849 + 66164186176 = 65793^2 + 257224^2 .

It is a de Polignac number, because none of the positive numbers 2k-70492905025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1300975 + ... + 1354075.

Almost surely, 270492905025 is an apocalyptic number.

70492905025 is the 265505-th square number.

70492905025 is the 132753-rd centered octagonal number.

It is an amenable number.

70492905025 is a deficient number, since it is larger than the sum of its proper divisors (16919943368).

70492905025 is an frugal number, since it uses more digits than its factorization.

70492905025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106212 (or 53106 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 70492905025 in words is "seventy billion, four hundred ninety-two million, nine hundred five thousand, twenty-five".

Divisors: 1 5 25 53101 265505 1327525 2819716201 14098581005 70492905025