20412525 has 48 divisors (see below), whose sum is σ = 39283200. Its totient is φ = 9159360.

The previous prime is 20412503. The next prime is 20412541. The reversal of 20412525 is 52521402.

It is a happy number.

It is not a de Polignac number, because 20412525 - 2⁷ = 20412397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30646 + ... + 31304.

It is an arithmetic number, because the mean of its divisors is an integer number (818400).

Almost surely, 2^20412525 is an apocalyptic number.

20412525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20412525 is a deficient number, since it is larger than the sum of its proper divisors (18870675).

20412525 is a wasteful number, since it uses less digits than its factorization.

20412525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20412525 is about 4518.0222443011. The cubic root of 20412525 is about 273.2953504958.

Adding to 20412525 its reverse (52521402), we get a palindrome (72933927).

The spelling of 20412525 in words is "twenty million, four hundred twelve thousand, five hundred twenty-five".