25131960 has 96 divisors (see below), whose sum is σ = 93356640. Its totient is φ = 5743872.

The previous prime is 25131959. The next prime is 25131961. The reversal of 25131960 is 6913152.

It is an interprime number because it is at equal distance from previous prime (25131959) and next prime (25131961).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2467 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (972465).

Almost surely, 2^25131960 is an apocalyptic number.

25131960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25131960 is an abundant number, since it is smaller than the sum of its proper divisors (68224680).

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

25131960 is a wasteful number, since it uses less digits than its factorization.

25131960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9997 (or 9990 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 25131960 is about 5013.1786323649. The cubic root of 25131960 is about 292.9153424458.

The spelling of 25131960 in words is "twenty-five million, one hundred thirty-one thousand, nine hundred sixty".