20258525 has 12 divisors (see below), whose sum is σ = 28709472. Its totient is φ = 13891440.

The previous prime is 20258507. The next prime is 20258549. The reversal of 20258525 is 52585202.

It is not a de Polignac number, because 20258525 - 2¹⁶ = 20192989 is a prime.

It is a Duffinian number.

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, 57707 + ... + 58056.

It is an arithmetic number, because the mean of its divisors is an integer number (2392456).

Almost surely, 2^20258525 is an apocalyptic number.

20258525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20258525 is a deficient number, since it is larger than the sum of its proper divisors (8450947).

20258525 is a wasteful number, since it uses less digits than its factorization.

20258525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115780 (or 115775 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 20258525 is about 4500.9471225510. The cubic root of 20258525 is about 272.6063328254.

The spelling of 20258525 in words is "twenty million, two hundred fifty-eight thousand, five hundred twenty-five".