125657478 has 12 divisors (see below), whose sum is σ = 272257908. Its totient is φ = 41885820.

The previous prime is 125657471. The next prime is 125657491. The reversal of 125657478 is 874756521.

125657478 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 574 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125657471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3490468 + ... + 3490503.

It is an arithmetic number, because the mean of its divisors is an integer number (22688159).

Almost surely, 2^125657478 is an apocalyptic number.

125657478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125657478 is an abundant number, since it is smaller than the sum of its proper divisors (146600430).

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

125657478 is a wasteful number, since it uses less digits than its factorization.

125657478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980979 (or 6980976 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 125657478 is about 11209.7046348242. The cubic root of 125657478 is about 500.8751048229.

The spelling of 125657478 in words is "one hundred twenty-five million, six hundred fifty-seven thousand, four hundred seventy-eight".