25183231920 has 480 divisors, whose sum is σ = 108851318784. Its totient is φ = 5063731200.

The previous prime is 25183231919. The next prime is 25183231933. The reversal of 25183231920 is 2913238152.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1711314 + ... + 1725966.

Almost surely, 2^25183231920 is an apocalyptic number.

25183231920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25183231920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54425659392).

25183231920 is an abundant number, since it is smaller than the sum of its proper divisors (83668086864).

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

25183231920 is a wasteful number, since it uses less digits than its factorization.

25183231920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721 (or 14712 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 25183231920 in words is "twenty-five billion, one hundred eighty-three million, two hundred thirty-one thousand, nine hundred twenty".