25752557507 has 12 divisors (see below), whose sum is σ = 26098896720. Its totient is φ = 25410311808.

The previous prime is 25752557503. The next prime is 25752557527. The reversal of 25752557507 is 70575525752.

It is a happy number.

It is not a de Polignac number, because 25752557507 - 2² = 25752557503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25752557503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2919698 + ... + 2928504.

It is an arithmetic number, because the mean of its divisors is an integer number (2174908060).

Almost surely, 2^25752557507 is an apocalyptic number.

25752557507 is a deficient number, since it is larger than the sum of its proper divisors (346339213).

25752557507 is an equidigital number, since it uses as much as digits as its factorization.

25752557507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262 (or 9149 counting only the distinct ones).

The product of its (nonzero) digits is 4287500, while the sum is 50.

The spelling of 25752557507 in words is "twenty-five billion, seven hundred fifty-two million, five hundred fifty-seven thousand, five hundred seven".