69257396225 has 12 divisors (see below), whose sum is σ = 87499534716. Its totient is φ = 54360521280.

The previous prime is 69257396209. The next prime is 69257396249. The reversal of 69257396225 is 52269375296.

It is a Cunningham number, because it is equal to 263168²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 69257396224 = 1^2 + 263168^2 .

It is not a de Polignac number, because 69257396225 - 2⁴ = 69257396209 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, 26133542 + ... + 26136191.

It is an arithmetic number, because the mean of its divisors is an integer number (7291627893).

It is a Proth number, since it is equal to 66049 ⋅ 2²⁰ + 1 and 66049 < 2²⁰.

Almost surely, 2^69257396225 is an apocalyptic number.

It is an amenable number.

69257396225 is a deficient number, since it is larger than the sum of its proper divisors (18242138491).

69257396225 is a wasteful number, since it uses less digits than its factorization.

69257396225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52269796 (or 52269791 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 56.

The spelling of 69257396225 in words is "sixty-nine billion, two hundred fifty-seven million, three hundred ninety-six thousand, two hundred twenty-five".