125686630 has 16 divisors (see below), whose sum is σ = 229101120. Its totient is φ = 49637952.

The previous prime is 125686619. The next prime is 125686637. The reversal of 125686630 is 36686521.

It is a self number, because there is not a number n which added to its sum of digits gives 125686630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125686637) 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, 78759 + ... + 80338.

It is an arithmetic number, because the mean of its divisors is an integer number (14318820).

Almost surely, 2^125686630 is an apocalyptic number.

125686630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125686630 is a deficient number, since it is larger than the sum of its proper divisors (103414490).

125686630 is a wasteful number, since it uses less digits than its factorization.

125686630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159183.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 125686630 is about 11211.0048612959. The cubic root of 125686630 is about 500.9138354587.

The spelling of 125686630 in words is "one hundred twenty-five million, six hundred eighty-six thousand, six hundred thirty".