25586940 has 48 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 6792000.

The previous prime is 25586927. The next prime is 25586947. The reversal of 25586940 is 4968552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25586947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14211 + ... + 15909.

It is an arithmetic number, because the mean of its divisors is an integer number (1499400).

Almost surely, 2^25586940 is an apocalyptic number.

25586940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25586940 is an abundant number, since it is smaller than the sum of its proper divisors (46384260).

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

25586940 is a wasteful number, since it uses less digits than its factorization.

25586940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 25586940 is about 5058.3534870549. The cubic root of 25586940 is about 294.6723931876.

The spelling of 25586940 in words is "twenty-five million, five hundred eighty-six thousand, nine hundred forty".