425239664 has 10 divisors (see below), whose sum is σ = 823901880. Its totient is φ = 212619824.

The previous prime is 425239651. The next prime is 425239667. The reversal of 425239664 is 466932524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425239667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13288724 + ... + 13288755.

It is an arithmetic number, because the mean of its divisors is an integer number (82390188).

Almost surely, 2^425239664 is an apocalyptic number.

It is an amenable number.

425239664 is a deficient number, since it is larger than the sum of its proper divisors (398662216).

425239664 is a wasteful number, since it uses less digits than its factorization.

425239664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26577487 (or 26577481 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The square root of 425239664 is about 20621.3400146547. The cubic root of 425239664 is about 751.9885976089.

The spelling of 425239664 in words is "four hundred twenty-five million, two hundred thirty-nine thousand, six hundred sixty-four".