233660425 has 6 divisors (see below), whose sum is σ = 289738958. Its totient is φ = 186928320.

The previous prime is 233660389. The next prime is 233660429. The reversal of 233660425 is 524066332.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 27910089 + 205750336 = 5283^2 + 14344^2 .

It is not a de Polignac number, because 233660425 - 2⁹ = 233659913 is a prime.

It is a super-2 number, since 2×233660425² = 109194388422361250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233660429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4673184 + ... + 4673233.

Almost surely, 2^233660425 is an apocalyptic number.

233660425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

233660425 is a deficient number, since it is larger than the sum of its proper divisors (56078533).

233660425 is an equidigital number, since it uses as much as digits as its factorization.

233660425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9346427 (or 9346422 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 233660425 is about 15285.9551549780. The cubic root of 233660425 is about 615.9257874629.

The spelling of 233660425 in words is "two hundred thirty-three million, six hundred sixty thousand, four hundred twenty-five".