425321231 has 4 divisors (see below), whose sum is σ = 425371464. Its totient is φ = 425271000.

The previous prime is 425321203. The next prime is 425321243. The reversal of 425321231 is 132123524.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 425321231 - 2¹⁸ = 425059087 is a prime.

It is a super-2 number, since 2×425321231² = 361796299078710722, 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 = 425321197 and 425321206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425321261) 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, 8945 + ... + 30506.

It is an arithmetic number, because the mean of its divisors is an integer number (106342866).

Almost surely, 2^425321231 is an apocalyptic number.

425321231 is a deficient number, since it is larger than the sum of its proper divisors (50233).

425321231 is a wasteful number, since it uses less digits than its factorization.

425321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50232.

The product of its digits is 1440, while the sum is 23.

The square root of 425321231 is about 20623.3176525990. The cubic root of 425321231 is about 752.0366752286.

Adding to 425321231 its reverse (132123524), we get a palindrome (557444755).

The spelling of 425321231 in words is "four hundred twenty-five million, three hundred twenty-one thousand, two hundred thirty-one".