25524213620 has 48 divisors (see below), whose sum is σ = 54295449600. Its totient is φ = 10078193664.

The previous prime is 25524213581. The next prime is 25524213623. The reversal of 25524213620 is 2631242552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25524213623) 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, 480212 + ... + 530708.

It is an arithmetic number, because the mean of its divisors is an integer number (1131155200).

Almost surely, 2^25524213620 is an apocalyptic number.

25524213620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25524213620 is an abundant number, since it is smaller than the sum of its proper divisors (28771235980).

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

25524213620 is a wasteful number, since it uses less digits than its factorization.

25524213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50832 (or 50830 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

It can be divided in two parts, 255242 and 13620, that added together give a palindrome (268862).

The spelling of 25524213620 in words is "twenty-five billion, five hundred twenty-four million, two hundred thirteen thousand, six hundred twenty".