125211966 has 32 divisors (see below), whose sum is σ = 282614400. Its totient is φ = 36634080.

The previous prime is 125211949. The next prime is 125211973. The reversal of 125211966 is 669112521.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30796 + ... + 34623.

It is an arithmetic number, because the mean of its divisors is an integer number (8831700).

Almost surely, 2^125211966 is an apocalyptic number.

125211966 is an abundant number, since it is smaller than the sum of its proper divisors (157402434).

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

125211966 is a wasteful number, since it uses less digits than its factorization.

125211966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65464.

The product of its digits is 6480, while the sum is 33.

The square root of 125211966 is about 11189.8152799767. The cubic root of 125211966 is about 500.2824617340.

The spelling of 125211966 in words is "one hundred twenty-five million, two hundred eleven thousand, nine hundred sixty-six".