125505644 has 12 divisors (see below), whose sum is σ = 239601768. Its totient is φ = 57048000.

The previous prime is 125505629. The next prime is 125505647. The reversal of 125505644 is 446505521.

It is a self number, because there is not a number n which added to its sum of digits gives 125505644.

It is not an unprimeable number, because it can be changed into a prime (125505647) 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, 1426157 + ... + 1426244.

It is an arithmetic number, because the mean of its divisors is an integer number (19966814).

Almost surely, 2^125505644 is an apocalyptic number.

It is an amenable number.

125505644 is a deficient number, since it is larger than the sum of its proper divisors (114096124).

125505644 is a wasteful number, since it uses less digits than its factorization.

125505644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852416 (or 2852414 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 125505644 is about 11202.9301524199. The cubic root of 125505644 is about 500.6732849678.

The spelling of 125505644 in words is "one hundred twenty-five million, five hundred five thousand, six hundred forty-four".