125137644 has 12 divisors (see below), whose sum is σ = 291987864. Its totient is φ = 41712544.

The previous prime is 125137633. The next prime is 125137673. The reversal of 125137644 is 446731521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5214057 + ... + 5214080.

It is an arithmetic number, because the mean of its divisors is an integer number (24332322).

Almost surely, 2^125137644 is an apocalyptic number.

It is an amenable number.

125137644 is an abundant number, since it is smaller than the sum of its proper divisors (166850220).

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

125137644 is a wasteful number, since it uses less digits than its factorization.

125137644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10428144 (or 10428142 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 125137644 is about 11186.4938206750. The cubic root of 125137644 is about 500.1834580114.

The spelling of 125137644 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, six hundred forty-four".