444397725 has 24 divisors (see below), whose sum is σ = 816376320. Its totient is φ = 237011760.

The previous prime is 444397721. The next prime is 444397753. The reversal of 444397725 is 527793444.

It is not a de Polignac number, because 444397725 - 2² = 444397721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444397721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328509 + ... + 329858.

It is an arithmetic number, because the mean of its divisors is an integer number (34015680).

Almost surely, 2^444397725 is an apocalyptic number.

444397725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

444397725 is a deficient number, since it is larger than the sum of its proper divisors (371978595).

444397725 is a wasteful number, since it uses less digits than its factorization.

444397725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658386 (or 658375 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 444397725 is about 21080.7429897525. The cubic root of 444397725 is about 763.1160872251.

The spelling of 444397725 in words is "four hundred forty-four million, three hundred ninety-seven thousand, seven hundred twenty-five".