425335631 has 24 divisors (see below), whose sum is σ = 531771696. Its totient is φ = 337962240.

The previous prime is 425335627. The next prime is 425335639. The reversal of 425335631 is 136533524.

It is not a de Polignac number, because 425335631 - 2² = 425335627 is a prime.

It is a super-2 number, since 2×425335631² = 361820797996336322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425335639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52001 + ... + 59621.

It is an arithmetic number, because the mean of its divisors is an integer number (22157154).

Almost surely, 2^425335631 is an apocalyptic number.

425335631 is a deficient number, since it is larger than the sum of its proper divisors (106436065).

425335631 is a wasteful number, since it uses less digits than its factorization.

425335631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7719 (or 7712 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 425335631 is about 20623.6667690302. Note that the first 3 decimals coincide. The cubic root of 425335631 is about 752.0451623086.

The spelling of 425335631 in words is "four hundred twenty-five million, three hundred thirty-five thousand, six hundred thirty-one".