425525431 has 4 divisors (see below), whose sum is σ = 425765872. Its totient is φ = 425284992.

The previous prime is 425525417. The next prime is 425525467. The reversal of 425525431 is 134525524.

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 425525431 - 2²⁷ = 291307703 is a prime.

It is a super-2 number, since 2×425525431² = 362143784855471522, 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 = 425525393 and 425525402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425522431) 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, 117546 + ... + 121111.

It is an arithmetic number, because the mean of its divisors is an integer number (106441468).

Almost surely, 2^425525431 is an apocalyptic number.

425525431 is a deficient number, since it is larger than the sum of its proper divisors (240441).

425525431 is a wasteful number, since it uses less digits than its factorization.

425525431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240440.

The product of its digits is 24000, while the sum is 31.

The square root of 425525431 is about 20628.2677653748. The cubic root of 425525431 is about 752.1570088403.

The spelling of 425525431 in words is "four hundred twenty-five million, five hundred twenty-five thousand, four hundred thirty-one".