425660390 has 16 divisors (see below), whose sum is σ = 766454832. Its totient is φ = 170205024.

The previous prime is 425660387. The next prime is 425660479. The reversal of 425660390 is 93066524.

It is a super-2 number, since 2×425660390² = 362373535229904200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425660390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33737 + ... + 44603.

It is an arithmetic number, because the mean of its divisors is an integer number (47903427).

Almost surely, 2^425660390 is an apocalyptic number.

425660390 is a deficient number, since it is larger than the sum of its proper divisors (340794442).

425660390 is a wasteful number, since it uses less digits than its factorization.

425660390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14791.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 425660390 is about 20631.5387210940. The cubic root of 425660390 is about 752.2365180938.

It can be divided in two parts, 4256 and 60390, that added together give a palindrome (64646).

The spelling of 425660390 in words is "four hundred twenty-five million, six hundred sixty thousand, three hundred ninety".