20574525 has 24 divisors (see below), whose sum is σ = 34151584. Its totient is φ = 10929600.

The previous prime is 20574517. The next prime is 20574551. The reversal of 20574525 is 52547502.

It is not a de Polignac number, because 20574525 - 2³ = 20574517 is a prime.

It is a super-2 number, since 2×20574525² = 846622157951250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20574492 and 20574501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29430 + ... + 30120.

Almost surely, 2^20574525 is an apocalyptic number.

20574525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20574525 is a deficient number, since it is larger than the sum of its proper divisors (13577059).

20574525 is a wasteful number, since it uses less digits than its factorization.

20574525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 20574525 is about 4535.9150124313. The cubic root of 20574525 is about 274.0164312522.

The spelling of 20574525 in words is "twenty million, five hundred seventy-four thousand, five hundred twenty-five".