125726564 has 6 divisors (see below), whose sum is σ = 220021494. Its totient is φ = 62863280.

The previous prime is 125726537. The next prime is 125726599. The reversal of 125726564 is 465627521.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 19430464 = 10310^2 + 4408^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715817 + ... + 15715824.

It is an arithmetic number, because the mean of its divisors is an integer number (36670249).

Almost surely, 2^125726564 is an apocalyptic number.

It is an amenable number.

125726564 is a deficient number, since it is larger than the sum of its proper divisors (94294930).

125726564 is a wasteful number, since it uses less digits than its factorization.

125726564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31431645 (or 31431643 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 125726564 is about 11212.7857377192. The cubic root of 125726564 is about 500.9668810768.

The spelling of 125726564 in words is "one hundred twenty-five million, seven hundred twenty-six thousand, five hundred sixty-four".