125819972 has 12 divisors (see below), whose sum is σ = 220383996. Its totient is φ = 62853120.

The previous prime is 125819927. The next prime is 125819983. The reversal of 125819972 is 279918521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98089216 + 27730756 = 9904^2 + 5266^2 .

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 3 ways as a sum of consecutive naturals, for example, 9029 + ... + 18252.

It is an arithmetic number, because the mean of its divisors is an integer number (18365333).

Almost surely, 2^125819972 is an apocalyptic number.

It is an amenable number.

125819972 is a deficient number, since it is larger than the sum of its proper divisors (94564024).

125819972 is a wasteful number, since it uses less digits than its factorization.

125819972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28438 (or 28436 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 125819972 is about 11216.9502093929. The cubic root of 125819972 is about 501.0909140819.

The spelling of 125819972 in words is "one hundred twenty-five million, eight hundred nineteen thousand, nine hundred seventy-two".