25232040520 has 64 divisors (see below), whose sum is σ = 60618222720. Its totient is φ = 9429471744.

The previous prime is 25232040481. The next prime is 25232040539. The reversal of 25232040520 is 2504023252.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279349 + ... + 358468.

It is an arithmetic number, because the mean of its divisors is an integer number (947159730).

Almost surely, 2^25232040520 is an apocalyptic number.

25232040520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25232040520 is an abundant number, since it is smaller than the sum of its proper divisors (35386182200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25232040520 is a wasteful number, since it uses less digits than its factorization.

25232040520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637894 (or 637890 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 25232040520 its reverse (2504023252), we get a palindrome (27736063772).

The spelling of 25232040520 in words is "twenty-five billion, two hundred thirty-two million, forty thousand, five hundred twenty".