425530631 has 8 divisors (see below), whose sum is σ = 451199280. Its totient is φ = 400189248.

The previous prime is 425530493. The next prime is 425530643. The reversal of 425530631 is 136035524.

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

It is not a de Polignac number, because 425530631 - 2²² = 421336327 is a prime.

It is a super-2 number, since 2×425530631² = 362152635838516322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425530594 and 425530603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425530661) 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, 79136 + ... + 84341.

It is an arithmetic number, because the mean of its divisors is an integer number (56399910).

Almost surely, 2^425530631 is an apocalyptic number.

425530631 is a deficient number, since it is larger than the sum of its proper divisors (25668649).

425530631 is a wasteful number, since it uses less digits than its factorization.

425530631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163633.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 425530631 is about 20628.3938056263. The cubic root of 425530631 is about 752.1600726607.

The spelling of 425530631 in words is "four hundred twenty-five million, five hundred thirty thousand, six hundred thirty-one".