125943664 has 80 divisors (see below), whose sum is σ = 306694656. Its totient is φ = 48672000.

The previous prime is 125943637. The next prime is 125943683. The reversal of 125943664 is 466349521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185694 + ... + 186370.

Almost surely, 2^125943664 is an apocalyptic number.

125943664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125943664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153347328).

125943664 is an abundant number, since it is smaller than the sum of its proper divisors (180750992).

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

125943664 is a wasteful number, since it uses less digits than its factorization.

125943664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 848 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 125943664 is about 11222.4624748760. The cubic root of 125943664 is about 501.2550656511.

The spelling of 125943664 in words is "one hundred twenty-five million, nine hundred forty-three thousand, six hundred sixty-four".