125664140 has 24 divisors (see below), whose sum is σ = 301594272. Its totient is φ = 43084800.

The previous prime is 125664089. The next prime is 125664167. The reversal of 125664140 is 41466521.

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, 448661 + ... + 448940.

It is an arithmetic number, because the mean of its divisors is an integer number (12566428).

Almost surely, 2^125664140 is an apocalyptic number.

125664140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125664140 is an abundant number, since it is smaller than the sum of its proper divisors (175930132).

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

125664140 is a wasteful number, since it uses less digits than its factorization.

125664140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897617 (or 897615 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 125664140 is about 11210.0017841212. The cubic root of 125664140 is about 500.8839563215.

The spelling of 125664140 in words is "one hundred twenty-five million, six hundred sixty-four thousand, one hundred forty".