125139552 has 24 divisors (see below), whose sum is σ = 328491576. Its totient is φ = 41713152.

The previous prime is 125139551. The next prime is 125139563. The reversal of 125139552 is 255931521.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125139551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651673 + ... + 651864.

It is an arithmetic number, because the mean of its divisors is an integer number (13687149).

Almost surely, 2^125139552 is an apocalyptic number.

125139552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125139552 is an abundant number, since it is smaller than the sum of its proper divisors (203352024).

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

125139552 is a wasteful number, since it uses less digits than its factorization.

125139552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303550 (or 1303542 counting only the distinct ones).

The product of its digits is 13500, while the sum is 33.

The square root of 125139552 is about 11186.5791017630. The cubic root of 125139552 is about 500.1860001327.

The spelling of 125139552 in words is "one hundred twenty-five million, one hundred thirty-nine thousand, five hundred fifty-two".