125249278 has 48 divisors (see below), whose sum is σ = 238557312. Its totient is φ = 48272400.

The previous prime is 125249261. The next prime is 125249317. The reversal of 125249278 is 872942521.

It is a self number, because there is not a number n which added to its sum of digits gives 125249278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180913 + ... + 181603.

It is an arithmetic number, because the mean of its divisors is an integer number (4969944).

Almost surely, 2^125249278 is an apocalyptic number.

125249278 is a deficient number, since it is larger than the sum of its proper divisors (113308034).

125249278 is a wasteful number, since it uses less digits than its factorization.

125249278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 818 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 125249278 is about 11191.4823861721. The cubic root of 125249278 is about 500.3321499706.

The spelling of 125249278 in words is "one hundred twenty-five million, two hundred forty-nine thousand, two hundred seventy-eight".