425630566 has 4 divisors (see below), whose sum is σ = 638445852. Its totient is φ = 212815282.

The previous prime is 425630563. The next prime is 425630567. The reversal of 425630566 is 665036524.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×425630566² = 362322757426960712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425630561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106407640 + ... + 106407643.

It is an arithmetic number, because the mean of its divisors is an integer number (159611463).

Almost surely, 2^425630566 is an apocalyptic number.

425630566 is a deficient number, since it is larger than the sum of its proper divisors (212815286).

425630566 is a wasteful number, since it uses less digits than its factorization.

425630566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212815285.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 425630566 is about 20630.8159315137. The cubic root of 425630566 is about 752.2189491378.

The spelling of 425630566 in words is "four hundred twenty-five million, six hundred thirty thousand, five hundred sixty-six".