25045322520 has 64 divisors (see below), whose sum is σ = 75150915840. Its totient is φ = 6677424000.

The previous prime is 25045322503. The next prime is 25045322527. The reversal of 25045322520 is 2522354052.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045322527) 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, 684285 + ... + 719955.

It is an arithmetic number, because the mean of its divisors is an integer number (1174233060).

Almost surely, 2^25045322520 is an apocalyptic number.

25045322520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25045322520 is an abundant number, since it is smaller than the sum of its proper divisors (50105593320).

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

25045322520 is a wasteful number, since it uses less digits than its factorization.

25045322520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41536 (or 41532 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 25045322520 its reverse (2522354052), we get a palindrome (27567676572).

It can be divided in two parts, 2504532 and 2520, that added together give a palindrome (2507052).

The spelling of 25045322520 in words is "twenty-five billion, forty-five million, three hundred twenty-two thousand, five hundred twenty".