20057525 has 12 divisors (see below), whose sum is σ = 25006212. Its totient is φ = 15959040.

The previous prime is 20057519. The next prime is 20057533. The reversal of 20057525 is 52575002.

It can be written as a sum of positive squares in 6 ways, for example, as 1747684 + 18309841 = 1322^2 + 4279^2 .

It is not a de Polignac number, because 20057525 - 2⁴ = 20057509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20057494 and 20057503.

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, 2747 + ... + 6903.

It is an arithmetic number, because the mean of its divisors is an integer number (2083851).

Almost surely, 2^20057525 is an apocalyptic number.

20057525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20057525 is a deficient number, since it is larger than the sum of its proper divisors (4948687).

20057525 is a wasteful number, since it uses less digits than its factorization.

20057525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360 (or 4355 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 20057525 is about 4478.5628275151. The cubic root of 20057525 is about 271.7017573367.

The spelling of 20057525 in words is "twenty million, fifty-seven thousand, five hundred twenty-five".