125405966 has 16 divisors (see below), whose sum is σ = 226296960. Its totient is φ = 50916600.

The previous prime is 125405941. The next prime is 125405983. The reversal of 125405966 is 669504521.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235460 + ... + 235991.

It is an arithmetic number, because the mean of its divisors is an integer number (14143560).

Almost surely, 2^125405966 is an apocalyptic number.

125405966 is a deficient number, since it is larger than the sum of its proper divisors (100890994).

125405966 is a wasteful number, since it uses less digits than its factorization.

125405966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471479.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 125405966 is about 11198.4805219280. The cubic root of 125405966 is about 500.5407030696.

The spelling of 125405966 in words is "one hundred twenty-five million, four hundred five thousand, nine hundred sixty-six".