425444657 has 8 divisors (see below), whose sum is σ = 470480160. Its totient is φ = 381468960.

The previous prime is 425444641. The next prime is 425444671. The reversal of 425444657 is 756444524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425444657 - 2⁴ = 425444641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425444627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264107 + ... + 265712.

It is an arithmetic number, because the mean of its divisors is an integer number (58810020).

Almost surely, 2^425444657 is an apocalyptic number.

It is an amenable number.

425444657 is a deficient number, since it is larger than the sum of its proper divisors (45035503).

425444657 is a wasteful number, since it uses less digits than its factorization.

425444657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529903.

The product of its digits is 537600, while the sum is 41.

The square root of 425444657 is about 20626.3098250754. The cubic root of 425444657 is about 752.1094138982.

The spelling of 425444657 in words is "four hundred twenty-five million, four hundred forty-four thousand, six hundred fifty-seven".