25900320 has 48 divisors (see below), whose sum is σ = 81587520. Its totient is φ = 6906624.

The previous prime is 25900309. The next prime is 25900361. The reversal of 25900320 is 2300952.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×25900320² = 1341653152204800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26500 + ... + 27459.

It is an arithmetic number, because the mean of its divisors is an integer number (1699740).

Almost surely, 2^25900320 is an apocalyptic number.

25900320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25900320 is an abundant number, since it is smaller than the sum of its proper divisors (55687200).

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

25900320 is a wasteful number, since it uses less digits than its factorization.

25900320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53977 (or 53969 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 25900320 is about 5089.2356990024. The cubic root of 25900320 is about 295.8705301814.

The spelling of 25900320 in words is "twenty-five million, nine hundred thousand, three hundred twenty".