125809628 has 12 divisors (see below), whose sum is σ = 251619312. Its totient is φ = 53918400.

The previous prime is 125809603. The next prime is 125809643. The reversal of 125809628 is 826908521.

125809628 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246573 + ... + 2246628.

It is an arithmetic number, because the mean of its divisors is an integer number (20968276).

Almost surely, 2^125809628 is an apocalyptic number.

It is an amenable number.

125809628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125809628 is a wasteful number, since it uses less digits than its factorization.

125809628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493212 (or 4493210 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 125809628 is about 11216.4891120172. The cubic root of 125809628 is about 501.0771816927.

The spelling of 125809628 in words is "one hundred twenty-five million, eight hundred nine thousand, six hundred twenty-eight".