125619616 has 12 divisors (see below), whose sum is σ = 247313682. Its totient is φ = 62809792.

The previous prime is 125619589. The next prime is 125619617. The reversal of 125619616 is 616916521.

It can be written as a sum of positive squares in only one way, i.e., 125529616 + 90000 = 11204^2 + 300^2 .

It is not an unprimeable number, because it can be changed into a prime (125619617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962775 + ... + 1962838.

Almost surely, 2^125619616 is an apocalyptic number.

125619616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125619616 is a deficient number, since it is larger than the sum of its proper divisors (121694066).

125619616 is an equidigital number, since it uses as much as digits as its factorization.

125619616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925623 (or 3925615 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 125619616 is about 11208.0157030582. The cubic root of 125619616 is about 500.8247933504.

It can be divided in two parts, 12 and 5619616, that added together give a triangular number (5619628 = T₃₃₅₂).

The spelling of 125619616 in words is "one hundred twenty-five million, six hundred nineteen thousand, six hundred sixteen".