125779564 has 6 divisors (see below), whose sum is σ = 220114244. Its totient is φ = 62889780.

The previous prime is 125779561. The next prime is 125779573. The reversal of 125779564 is 465977521.

It is not an unprimeable number, because it can be changed into a prime (125779561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722442 + ... + 15722449.

Almost surely, 2^125779564 is an apocalyptic number.

It is an amenable number.

125779564 is a deficient number, since it is larger than the sum of its proper divisors (94334680).

125779564 is a wasteful number, since it uses less digits than its factorization.

125779564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31444895 (or 31444893 counting only the distinct ones).

The product of its digits is 529200, while the sum is 46.

The square root of 125779564 is about 11215.1488621418. The cubic root of 125779564 is about 501.0372653399.

It can be divided in two parts, 125 and 779564, that added together give a square (779689 = 883²).

The spelling of 125779564 in words is "one hundred twenty-five million, seven hundred seventy-nine thousand, five hundred sixty-four".