20982525 has 12 divisors (see below), whose sum is σ = 34691232. Its totient is φ = 11190640.

The previous prime is 20982503. The next prime is 20982553. The reversal of 20982525 is 52528902.

It is not a de Polignac number, because 20982525 - 2⁶ = 20982461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139809 + ... + 139958.

It is an arithmetic number, because the mean of its divisors is an integer number (2890936).

Almost surely, 2^20982525 is an apocalyptic number.

20982525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20982525 is a deficient number, since it is larger than the sum of its proper divisors (13708707).

20982525 is a wasteful number, since it uses less digits than its factorization.

20982525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279780 (or 279775 counting only the distinct ones).

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

The square root of 20982525 is about 4580.6686193175. The cubic root of 20982525 is about 275.8158690995.

The spelling of 20982525 in words is "twenty million, nine hundred eighty-two thousand, five hundred twenty-five".