25913880 has 48 divisors (see below), whose sum is σ = 84221280. Its totient is φ = 6910272.

The previous prime is 25913851. The next prime is 25913911. The reversal of 25913880 is 8831952.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 35632 + ... + 36351.

It is an arithmetic number, because the mean of its divisors is an integer number (1754610).

Almost surely, 2^25913880 is an apocalyptic number.

25913880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25913880 is an abundant number, since it is smaller than the sum of its proper divisors (58307400).

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

25913880 is a wasteful number, since it uses less digits than its factorization.

25913880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72000 (or 71993 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 25913880 is about 5090.5677482968. The cubic root of 25913880 is about 295.9221550833.

The spelling of 25913880 in words is "twenty-five million, nine hundred thirteen thousand, eight hundred eighty".