325256652491 has 2 divisors, whose sum is σ = 325256652492. Its totient is φ = 325256652490.

The previous prime is 325256652433. The next prime is 325256652499. The reversal of 325256652491 is 194256652523.

It is a strong prime.

It is an emirp because it is prime and its reverse (194256652523) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325256652491 is a prime.

It is a super-2 number, since 2×325256652491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (325256652499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162628326245 + 162628326246.

It is an arithmetic number, because the mean of its divisors is an integer number (162628326246).

Almost surely, 2^325256652491 is an apocalyptic number.

325256652491 is a deficient number, since it is larger than the sum of its proper divisors (1).

325256652491 is an equidigital number, since it uses as much as digits as its factorization.

325256652491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 50.

The spelling of 325256652491 in words is "three hundred twenty-five billion, two hundred fifty-six million, six hundred fifty-two thousand, four hundred ninety-one".