12625219044 has 81 divisors (see below), whose sum is σ = 32551530921. Its totient is φ = 4125932640.

The previous prime is 12625219039. The next prime is 12625219051. The reversal of 12625219044 is 44091252621.

It is a happy number.

The square root of 12625219044 is 112362.

It is a perfect power (a square), and thus also a powerful number.

12625219044 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 521 + 90 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 410548644 + 12214670400 = 20262^2 + 110520^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 41124339 + ... + 41124645.

Almost surely, 2^12625219044 is an apocalyptic number.

12625219044 is the 112362-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12625219044

12625219044 is an abundant number, since it is smaller than the sum of its proper divisors (19926311877).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12625219044 is an equidigital number, since it uses as much as digits as its factorization.

12625219044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Multiplying 12625219044 by its sum of digits (36), we get a square (454507885584 = 674172²).

12625219044 divided by its sum of digits (36) gives a square (350700529 = 18727²).

The spelling of 12625219044 in words is "twelve billion, six hundred twenty-five million, two hundred nineteen thousand, forty-four".