231248425 has 6 divisors (see below), whose sum is σ = 286748078. Its totient is φ = 184998720.

The previous prime is 231248419. The next prime is 231248429. The reversal of 231248425 is 524842132.

It can be written as a sum of positive squares in 3 ways, for example, as 1058841 + 230189584 = 1029^2 + 15172^2 .

It is not a de Polignac number, because 231248425 - 2⁵ = 231248393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231248429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4624944 + ... + 4624993.

Almost surely, 2^231248425 is an apocalyptic number.

231248425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231248425 is a deficient number, since it is larger than the sum of its proper divisors (55499653).

231248425 is an equidigital number, since it uses as much as digits as its factorization.

231248425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249947 (or 9249942 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 231248425 is about 15206.8545399764. The cubic root of 231248425 is about 613.7991195999.

The spelling of 231248425 in words is "two hundred thirty-one million, two hundred forty-eight thousand, four hundred twenty-five".