125666492 has 12 divisors (see below), whose sum is σ = 251333040. Its totient is φ = 53857056.

The previous prime is 125666491. The next prime is 125666531. The reversal of 125666492 is 294666521.

It is a happy number.

125666492 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125666491) 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, 2244017 + ... + 2244072.

It is an arithmetic number, because the mean of its divisors is an integer number (20944420).

Almost surely, 2^125666492 is an apocalyptic number.

It is an amenable number.

125666492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125666492 is a wasteful number, since it uses less digits than its factorization.

125666492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488100 (or 4488098 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 125666492 is about 11210.1066899472. The cubic root of 125666492 is about 500.8870812430.

The spelling of 125666492 in words is "one hundred twenty-five million, six hundred sixty-six thousand, four hundred ninety-two".