425557231 has 16 divisors (see below), whose sum is σ = 489363840. Its totient is φ = 365994720.

The previous prime is 425557217. The next prime is 425557241. The reversal of 425557231 is 132755524.

It is not a de Polignac number, because 425557231 - 2⁵ = 425557199 is a prime.

It is a super-2 number, since 2×425557231² = 362197913712774722, 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 (425557211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286216 + ... + 287698.

It is an arithmetic number, because the mean of its divisors is an integer number (30585240).

Almost surely, 2^425557231 is an apocalyptic number.

425557231 is a deficient number, since it is larger than the sum of its proper divisors (63806609).

425557231 is a wasteful number, since it uses less digits than its factorization.

425557231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its digits is 42000, while the sum is 34.

The square root of 425557231 is about 20629.0385379445. The cubic root of 425557231 is about 752.1757448902.

The spelling of 425557231 in words is "four hundred twenty-five million, five hundred fifty-seven thousand, two hundred thirty-one".