25320312040 has 64 divisors (see below), whose sum is σ = 60359722560. Its totient is φ = 9526379520.

The previous prime is 25320312007. The next prime is 25320312047. The reversal of 25320312040 is 4021302352.

It is a super-2 number, since 2×25320312040² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25320312047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1160835 + ... + 1182445.

It is an arithmetic number, because the mean of its divisors is an integer number (943120665).

Almost surely, 2^25320312040 is an apocalyptic number.

25320312040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25320312040 is an abundant number, since it is smaller than the sum of its proper divisors (35039410520).

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

25320312040 is a wasteful number, since it uses less digits than its factorization.

25320312040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23362 (or 23358 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 25320312040 its reverse (4021302352), we get a palindrome (29341614392).

The spelling of 25320312040 in words is "twenty-five billion, three hundred twenty million, three hundred twelve thousand, forty".