25404880 has 40 divisors (see below), whose sum is σ = 61638912. Its totient is φ = 9719424.

The previous prime is 25404839. The next prime is 25404887. The reversal of 25404880 is 8840452.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5064 + ... + 8743.

Almost surely, 2^25404880 is an apocalyptic number.

25404880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25404880 is an abundant number, since it is smaller than the sum of its proper divisors (36234032).

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

25404880 is a wasteful number, since it uses less digits than its factorization.

25404880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13843 (or 13837 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 25404880 is about 5040.3253863218. The cubic root of 25404880 is about 293.9718300250.

The spelling of 25404880 in words is "twenty-five million, four hundred four thousand, eight hundred eighty".