444625425 has 18 divisors (see below), whose sum is σ = 796373942. Its totient is φ = 237133440.

The previous prime is 444625421. The next prime is 444625471. The reversal of 444625425 is 524526444.

444625425 is a `hidden beast` number, since 4 + 4 + 4 + 625 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 12027024 + 432598401 = 3468^2 + 20799^2 .

It is not a de Polignac number, because 444625425 - 2² = 444625421 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444625425.

It is not an unprimeable number, because it can be changed into a prime (444625421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 987832 + ... + 988281.

Almost surely, 2^444625425 is an apocalyptic number.

444625425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

444625425 is a deficient number, since it is larger than the sum of its proper divisors (351748517).

444625425 is a wasteful number, since it uses less digits than its factorization.

444625425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976129 (or 1976121 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 444625425 is about 21086.1429616703. The cubic root of 444625425 is about 763.2463998216.

The spelling of 444625425 in words is "four hundred forty-four million, six hundred twenty-five thousand, four hundred twenty-five".