25137040 has 20 divisors (see below), whose sum is σ = 58443804. Its totient is φ = 10054784.

The previous prime is 25137037. The next prime is 25137041. The reversal of 25137040 is 4073152.

It can be written as a sum of positive squares in 2 ways, for example, as 14167696 + 10969344 = 3764^2 + 3312^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (25137041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157027 + ... + 157186.

Almost surely, 2^25137040 is an apocalyptic number.

25137040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25137040 is an abundant number, since it is smaller than the sum of its proper divisors (33306764).

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

25137040 is a wasteful number, since it uses less digits than its factorization.

25137040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314226 (or 314220 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25137040 is about 5013.6852713348. The cubic root of 25137040 is about 292.9350770745.

The spelling of 25137040 in words is "twenty-five million, one hundred thirty-seven thousand, forty".