125979660 has 144 divisors (see below), whose sum is σ = 400038912. Its totient is φ = 32054400.

The previous prime is 125979647. The next prime is 125979697. The reversal of 125979660 is 66979521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 596955 + ... + 597165.

It is an arithmetic number, because the mean of its divisors is an integer number (2778048).

Almost surely, 2^125979660 is an apocalyptic number.

125979660 is a gapful number since it is divisible by the number (10) 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 125979660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200019456).

125979660 is an abundant number, since it is smaller than the sum of its proper divisors (274059252).

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

125979660 is a wasteful number, since it uses less digits than its factorization.

125979660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 125979660 is about 11224.0661081446. The cubic root of 125979660 is about 501.3028157273.

The spelling of 125979660 in words is "one hundred twenty-five million, nine hundred seventy-nine thousand, six hundred sixty".