20125660 has 24 divisors (see below), whose sum is σ = 42862176. Its totient is φ = 7936320.

The previous prime is 20125649. The next prime is 20125697. The reversal of 20125660 is 6652102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5667 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (1785924).

Almost surely, 2^20125660 is an apocalyptic number.

20125660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20125660 is an abundant number, since it is smaller than the sum of its proper divisors (22736516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20125660 is a wasteful number, since it uses less digits than its factorization.

20125660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253 (or 14251 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20125660 is about 4486.1631713526. The cubic root of 20125660 is about 272.0090647210.

Adding to 20125660 its reverse (6652102), we get a palindrome (26777762).

The spelling of 20125660 in words is "twenty million, one hundred twenty-five thousand, six hundred sixty".