444399680725 has 96 divisors (see below), whose sum is σ = 745532282880. Its totient is φ = 253764576000.

The previous prime is 444399680717. The next prime is 444399680729. The reversal of 444399680725 is 527086993444.

It is a happy number.

It is not a de Polignac number, because 444399680725 - 2³ = 444399680717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444399680729) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3210496 + ... + 3346054.

It is an arithmetic number, because the mean of its divisors is an integer number (7765961280).

Almost surely, 2^444399680725 is an apocalyptic number.

It is an amenable number.

444399680725 is a deficient number, since it is larger than the sum of its proper divisors (301132602155).

444399680725 is a wasteful number, since it uses less digits than its factorization.

444399680725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135731 (or 135726 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 444399680725 in words is "four hundred forty-four billion, three hundred ninety-nine million, six hundred eighty thousand, seven hundred twenty-five".