744363445225 has 9 divisors (see below), whose sum is σ = 923016021253. Its totient is φ = 595487305120.

The previous prime is 744363445207. The next prime is 744363445229. The reversal of 744363445225 is 522544363447.

The square root of 744363445225 is 862765.

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

It can be written as a sum of positive squares in 4 ways, for example, as 106352297689 + 638011147536 = 326117^2 + 798756^2 .

It is not a de Polignac number, because 744363445225 - 2⁵ = 744363445193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744363445229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4227549 + ... + 4400101.

Almost surely, 2^744363445225 is an apocalyptic number.

744363445225 is the 862765-th square number.

744363445225 is the 431383-rd centered octagonal number.

It is an amenable number.

744363445225 is a deficient number, since it is larger than the sum of its proper divisors (178652576028).

744363445225 is an frugal number, since it uses more digits than its factorization.

744363445225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345116 (or 172558 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 49.

Multiplying 744363445225 by its sum of digits (49), we get a square (36473808816025 = 6039355²).

The spelling of 744363445225 in words is "seven hundred forty-four billion, three hundred sixty-three million, four hundred forty-five thousand, two hundred twenty-five".