125651984 has 10 divisors (see below), whose sum is σ = 243450750. Its totient is φ = 62825984.

The previous prime is 125651971. The next prime is 125651987. The reversal of 125651984 is 489156521.

It can be written as a sum of positive squares in only one way, i.e., 81721600 + 43930384 = 9040^2 + 6628^2 .

It is not an unprimeable number, because it can be changed into a prime (125651987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3926609 + ... + 3926640.

It is an arithmetic number, because the mean of its divisors is an integer number (24345075).

Almost surely, 2^125651984 is an apocalyptic number.

It is an amenable number.

125651984 is a deficient number, since it is larger than the sum of its proper divisors (117798766).

125651984 is an equidigital number, since it uses as much as digits as its factorization.

125651984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853257 (or 7853251 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 125651984 is about 11209.4595766254. The cubic root of 125651984 is about 500.8678049577.

The spelling of 125651984 in words is "one hundred twenty-five million, six hundred fifty-one thousand, nine hundred eighty-four".