25123000920 has 128 divisors (see below), whose sum is σ = 77683415040. Its totient is φ = 6495759360.

The previous prime is 25123000871. The next prime is 25123000939. The reversal of 25123000920 is 2900032152.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 786297 + ... + 817623.

It is an arithmetic number, because the mean of its divisors is an integer number (606901680).

Almost surely, 2^25123000920 is an apocalyptic number.

25123000920 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 25123000920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38841707520).

25123000920 is an abundant number, since it is smaller than the sum of its proper divisors (52560414120).

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

25123000920 is a wasteful number, since it uses less digits than its factorization.

25123000920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31545 (or 31541 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 25123000920 in words is "twenty-five billion, one hundred twenty-three million, nine hundred twenty", and thus it is an aban number.