25164140 has 12 divisors (see below), whose sum is σ = 52844736. Its totient is φ = 10065648.

The previous prime is 25164137. The next prime is 25164169. The reversal of 25164140 is 4146152.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629084 + ... + 629123.

It is an arithmetic number, because the mean of its divisors is an integer number (4403728).

Almost surely, 2^25164140 is an apocalyptic number.

25164140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25164140 is an abundant number, since it is smaller than the sum of its proper divisors (27680596).

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

25164140 is a wasteful number, since it uses less digits than its factorization.

25164140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258216 (or 1258214 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 25164140 is about 5016.3871461441. The cubic root of 25164140 is about 293.0403094258.

The spelling of 25164140 in words is "twenty-five million, one hundred sixty-four thousand, one hundred forty".