25324100520 has 32 divisors (see below), whose sum is σ = 75972301920. Its totient is φ = 6753093440.

The previous prime is 25324100509. The next prime is 25324100521. The reversal of 25324100520 is 2500142352.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (25324100521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105516966 + ... + 105517205.

It is an arithmetic number, because the mean of its divisors is an integer number (2374134435).

Almost surely, 2^25324100520 is an apocalyptic number.

25324100520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25324100520 is an abundant number, since it is smaller than the sum of its proper divisors (50648201400).

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

25324100520 is a wasteful number, since it uses less digits than its factorization.

25324100520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211034185 (or 211034181 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 25324100520 its reverse (2500142352), we get a palindrome (27824242872).

The spelling of 25324100520 in words is "twenty-five billion, three hundred twenty-four million, one hundred thousand, five hundred twenty".