125451992 has 8 divisors (see below), whose sum is σ = 235222500. Its totient is φ = 62725992.

The previous prime is 125451899. The next prime is 125452001. The reversal of 125451992 is 299154521.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 7840742 + ... + 7840757.

Almost surely, 2^125451992 is an apocalyptic number.

It is an amenable number.

125451992 is a deficient number, since it is larger than the sum of its proper divisors (109770508).

125451992 is a wasteful number, since it uses less digits than its factorization.

125451992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15681505 (or 15681501 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 125451992 is about 11200.5353443485. The cubic root of 125451992 is about 500.6019310672.

The spelling of 125451992 in words is "one hundred twenty-five million, four hundred fifty-one thousand, nine hundred ninety-two".