125221664 has 24 divisors (see below), whose sum is σ = 247484160. Its totient is φ = 62368576.

The previous prime is 125221661. The next prime is 125221687. The reversal of 125221664 is 466122521.

It is not an unprimeable number, because it can be changed into a prime (125221661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977 + ... + 15855.

It is an arithmetic number, because the mean of its divisors is an integer number (10311840).

Almost surely, 2^125221664 is an apocalyptic number.

It is an amenable number.

125221664 is a deficient number, since it is larger than the sum of its proper divisors (122262496).

125221664 is a wasteful number, since it uses less digits than its factorization.

125221664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152 (or 15144 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 125221664 is about 11190.2486120729. The cubic root of 125221664 is about 500.2953774699.

The spelling of 125221664 in words is "one hundred twenty-five million, two hundred twenty-one thousand, six hundred sixty-four".