25455880 has 32 divisors (see below), whose sum is σ = 57738240. Its totient is φ = 10100160.

The previous prime is 25455863. The next prime is 25455883. The reversal of 25455880 is 8855452.

It is not an unprimeable number, because it can be changed into a prime (25455883) 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, 2575 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (1804320).

Almost surely, 2^25455880 is an apocalyptic number.

25455880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25455880 is an abundant number, since it is smaller than the sum of its proper divisors (32282360).

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

25455880 is a wasteful number, since it uses less digits than its factorization.

25455880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149 (or 5145 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 25455880 is about 5045.3820469812. The cubic root of 25455880 is about 294.1684135428.

It can be divided in two parts, 25455 and 880, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 25455880 in words is "twenty-five million, four hundred fifty-five thousand, eight hundred eighty".