425999431 has 8 divisors (see below), whose sum is σ = 500475024. Its totient is φ = 357481920.

The previous prime is 425999419. The next prime is 425999449. The reversal of 425999431 is 134999524.

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

It is a cyclic number.

It is not a de Polignac number, because 425999431 - 2¹⁵ = 425966663 is a prime.

It is a super-2 number, since 2×425999431² = 362951030424647522, 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 (425999461) 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, 1489366 + ... + 1489651.

It is an arithmetic number, because the mean of its divisors is an integer number (62559378).

Almost surely, 2^425999431 is an apocalyptic number.

425999431 is a deficient number, since it is larger than the sum of its proper divisors (74475593).

425999431 is a wasteful number, since it uses less digits than its factorization.

425999431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979041.

The product of its digits is 349920, while the sum is 46.

The square root of 425999431 is about 20639.7536564757. The cubic root of 425999431 is about 752.4361853590.

The spelling of 425999431 in words is "four hundred twenty-five million, nine hundred ninety-nine thousand, four hundred thirty-one".