125558664 has 64 divisors (see below), whose sum is σ = 391357440. Its totient is φ = 32612160.

The previous prime is 125558663. The next prime is 125558681. The reversal of 125558664 is 466855521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (125558663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32124 + ... + 35819.

It is an arithmetic number, because the mean of its divisors is an integer number (6114960).

Almost surely, 2^125558664 is an apocalyptic number.

125558664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125558664 is an abundant number, since it is smaller than the sum of its proper divisors (265798776).

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

125558664 is a wasteful number, since it uses less digits than its factorization.

125558664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67970 (or 67966 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 125558664 is about 11205.2962477571. The cubic root of 125558664 is about 500.7437783722.

The spelling of 125558664 in words is "one hundred twenty-five million, five hundred fifty-eight thousand, six hundred sixty-four".