20125144 has 32 divisors (see below), whose sum is σ = 43031520. Its totient is φ = 8741376.

The previous prime is 20125117. The next prime is 20125153. The reversal of 20125144 is 44152102.

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, 3924 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (1344735).

Almost surely, 2^20125144 is an apocalyptic number.

It is an amenable number.

20125144 is an abundant number, since it is smaller than the sum of its proper divisors (22906376).

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

20125144 is a wasteful number, since it uses less digits than its factorization.

20125144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11419 (or 11415 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20125144 is about 4486.1056608154. The cubic root of 20125144 is about 272.0067400291.

Adding to 20125144 its reverse (44152102), we get a palindrome (64277246).

It can be divided in two parts, 201251 and 44, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 20125144 in words is "twenty million, one hundred twenty-five thousand, one hundred forty-four".