252502777525 has 6 divisors (see below), whose sum is σ = 313103444162. Its totient is φ = 202002222000.

The previous prime is 252502777523. The next prime is 252502777543. The reversal of 252502777525 is 525777205252.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7540143556 + 244962633969 = 86834^2 + 494937^2 .

It is not a de Polignac number, because 252502777525 - 2¹ = 252502777523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252502777523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5050055526 + ... + 5050055575.

Almost surely, 2^252502777525 is an apocalyptic number.

252502777525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252502777525 is a deficient number, since it is larger than the sum of its proper divisors (60600666637).

252502777525 is a wasteful number, since it uses less digits than its factorization.

252502777525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100111111 (or 10100111106 counting only the distinct ones).

The product of its (nonzero) digits is 3430000, while the sum is 49.

The spelling of 252502777525 in words is "two hundred fifty-two billion, five hundred two million, seven hundred seventy-seven thousand, five hundred twenty-five".