425567 has 4 divisors (see below), whose sum is σ = 432840. Its totient is φ = 418296.

The previous prime is 425563. The next prime is 425591. The reversal of 425567 is 765524.

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

It is a cyclic number.

It is not a de Polignac number, because 425567 - 2² = 425563 is a prime.

It is a super-2 number, since 2×425567² = 362214542978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (108210).

2⁴²⁵⁵⁶⁷ is an apocalyptic number.

425567 is a deficient number, since it is larger than the sum of its proper divisors (7273).

425567 is an equidigital number, since it uses as much as digits as its factorization.

425567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272.

The product of its digits is 8400, while the sum is 29.

The square root of 425567 is about 652.3549647240. The cubic root of 425567 is about 75.2181500441.

The spelling of 425567 in words is "four hundred twenty-five thousand, five hundred sixty-seven".