25164040 has 32 divisors (see below), whose sum is σ = 61767360. Its totient is φ = 9150400.

The previous prime is 25164019. The next prime is 25164043. The reversal of 25164040 is 4046152.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25164043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28156 + ... + 29035.

It is an arithmetic number, because the mean of its divisors is an integer number (1930230).

Almost surely, 2^25164040 is an apocalyptic number.

25164040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25164040 is an abundant number, since it is smaller than the sum of its proper divisors (36603320).

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

25164040 is a wasteful number, since it uses less digits than its factorization.

25164040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57213 (or 57209 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25164040 is about 5016.3771788015. The cubic root of 25164040 is about 293.0399212535.

It can be divided in two parts, 2516 and 4040, that added together give a palindrome (6556).

The spelling of 25164040 in words is "twenty-five million, one hundred sixty-four thousand, forty".