25312920 has 64 divisors (see below), whose sum is σ = 77034240. Its totient is φ = 6652800.

The previous prime is 25312919. The next prime is 25312951. The reversal of 25312920 is 2921352.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7035 + ... + 10005.

It is an arithmetic number, because the mean of its divisors is an integer number (1203660).

Almost surely, 2^25312920 is an apocalyptic number.

25312920 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 25312920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38517120).

25312920 is an abundant number, since it is smaller than the sum of its proper divisors (51721320).

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

25312920 is a wasteful number, since it uses less digits than its factorization.

25312920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056 (or 3052 counting only the distinct ones).

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

The square root of 25312920 is about 5031.1946891370. The cubic root of 25312920 is about 293.6166970238.

The spelling of 25312920 in words is "twenty-five million, three hundred twelve thousand, nine hundred twenty".