25205982 has 16 divisors (see below), whose sum is σ = 50776320. Its totient is φ = 8341272.

The previous prime is 25205969. The next prime is 25206011. The reversal of 25205982 is 28950252.

It is a congruent number.

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, 14278 + ... + 15945.

It is an arithmetic number, because the mean of its divisors is an integer number (3173520).

Almost surely, 2^25205982 is an apocalyptic number.

25205982 is an abundant number, since it is smaller than the sum of its proper divisors (25570338).

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

25205982 is a wasteful number, since it uses less digits than its factorization.

25205982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30367.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 25205982 is about 5020.5559453112. Note that the first 3 decimals coincide. The cubic root of 25205982 is about 293.2026383453.

The spelling of 25205982 in words is "twenty-five million, two hundred five thousand, nine hundred eighty-two".