69428525 has 6 divisors (see below), whose sum is σ = 86091402. Its totient is φ = 55542800.

The previous prime is 69428503. The next prime is 69428543. The reversal of 69428525 is 52582496.

It can be written as a sum of positive squares in 3 ways, for example, as 256036 + 69172489 = 506^2 + 8317^2 .

It is not a de Polignac number, because 69428525 - 2⁸ = 69428269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1388546 + ... + 1388595.

It is an arithmetic number, because the mean of its divisors is an integer number (14348567).

Almost surely, 2^69428525 is an apocalyptic number.

It is an amenable number.

69428525 is a deficient number, since it is larger than the sum of its proper divisors (16662877).

69428525 is a wasteful number, since it uses less digits than its factorization.

69428525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777151 (or 2777146 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 69428525 is about 8332.3781119198. The cubic root of 69428525 is about 411.0039347405.

The spelling of 69428525 in words is "sixty-nine million, four hundred twenty-eight thousand, five hundred twenty-five".