25634040 has 64 divisors (see below), whose sum is σ = 80956800. Its totient is φ = 6475392.

The previous prime is 25634039. The next prime is 25634069. The reversal of 25634040 is 4043652.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25634040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3342 + ... + 7901.

It is an arithmetic number, because the mean of its divisors is an integer number (1264950).

Almost surely, 2^25634040 is an apocalyptic number.

25634040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25634040 is an abundant number, since it is smaller than the sum of its proper divisors (55322760).

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

25634040 is a wasteful number, since it uses less digits than its factorization.

25634040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276 (or 11272 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 25634040 is about 5063.0070116483. The cubic root of 25634040 is about 294.8530916520.

Adding to 25634040 its reverse (4043652), we get a palindrome (29677692).

The spelling of 25634040 in words is "twenty-five million, six hundred thirty-four thousand, forty".