252571440025 has 24 divisors (see below), whose sum is σ = 320900257944. Its totient is φ = 197084121600.

The previous prime is 252571440019. The next prime is 252571440041. The reversal of 252571440025 is 520044175252.

It can be written as a sum of positive squares in 12 ways, for example, as 28461039616 + 224110400409 = 168704^2 + 473403^2 .

It is not a de Polignac number, because 252571440025 - 2¹¹ = 252571437977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4907727 + ... + 4958923.

It is an arithmetic number, because the mean of its divisors is an integer number (13370844081).

Almost surely, 2^252571440025 is an apocalyptic number.

252571440025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252571440025 is a deficient number, since it is larger than the sum of its proper divisors (68328817919).

252571440025 is a wasteful number, since it uses less digits than its factorization.

252571440025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56061 (or 56056 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 37.

The spelling of 252571440025 in words is "two hundred fifty-two billion, five hundred seventy-one million, four hundred forty thousand, twenty-five".