125628978 has 16 divisors (see below), whose sum is σ = 252451296. Its totient is φ = 41677440.

The previous prime is 125628977. The next prime is 125628983. The reversal of 125628978 is 879826521.

It is a super-2 number, since 2×125628978² = 31565280226648968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125628977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48351 + ... + 50882.

It is an arithmetic number, because the mean of its divisors is an integer number (15778206).

Almost surely, 2^125628978 is an apocalyptic number.

125628978 is an abundant number, since it is smaller than the sum of its proper divisors (126822318).

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

125628978 is a wasteful number, since it uses less digits than its factorization.

125628978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99449.

The product of its digits is 483840, while the sum is 48.

The square root of 125628978 is about 11208.4333428004. The cubic root of 125628978 is about 500.8372346272.

The spelling of 125628978 in words is "one hundred twenty-five million, six hundred twenty-eight thousand, nine hundred seventy-eight".