325997661247 has 2 divisors, whose sum is σ = 325997661248. Its totient is φ = 325997661246.

The previous prime is 325997661239. The next prime is 325997661263. The reversal of 325997661247 is 742166799523.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 325997661247 - 2³ = 325997661239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325997661277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162998830623 + 162998830624.

It is an arithmetic number, because the mean of its divisors is an integer number (162998830624).

Almost surely, 2^325997661247 is an apocalyptic number.

325997661247 is a deficient number, since it is larger than the sum of its proper divisors (1).

325997661247 is an equidigital number, since it uses as much as digits as its factorization.

325997661247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 61.

The spelling of 325997661247 in words is "three hundred twenty-five billion, nine hundred ninety-seven million, six hundred sixty-one thousand, two hundred forty-seven".