25416232320 has 64 divisors (see below), whose sum is σ = 81014246640. Its totient is φ = 6777661440.

The previous prime is 25416232307. The next prime is 25416232327. The reversal of 25416232320 is 2323261452.

It is a tau number, because it is divible by the number of its divisors (64).

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 (25416232327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6616891 + ... + 6620730.

Almost surely, 2^25416232320 is an apocalyptic number.

25416232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25416232320 is an abundant number, since it is smaller than the sum of its proper divisors (55598014320).

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

25416232320 is a wasteful number, since it uses less digits than its factorization.

25416232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13237643 (or 13237631 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 25416232320 its reverse (2323261452), we get a palindrome (27739493772).

The spelling of 25416232320 in words is "twenty-five billion, four hundred sixteen million, two hundred thirty-two thousand, three hundred twenty".