1325465681 has 2 divisors, whose sum is σ = 1325465682. Its totient is φ = 1325465680.

The previous prime is 1325465663. The next prime is 1325465683. The reversal of 1325465681 is 1865645231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1074528400 + 250937281 = 32780^2 + 15841^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325465681 - 2²² = 1321271377 is a prime.

It is a super-2 number, since 2×1325465681² = 3513718543017587522, which contains 22 as substring.

Together with 1325465683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1325465683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662732840 + 662732841.

It is an arithmetic number, because the mean of its divisors is an integer number (662732841).

Almost surely, 2^1325465681 is an apocalyptic number.

It is an amenable number.

1325465681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325465681 is an equidigital number, since it uses as much as digits as its factorization.

1325465681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 1325465681 is about 36406.9455049445. The cubic root of 1325465681 is about 1098.4732762084.

The spelling of 1325465681 in words is "one billion, three hundred twenty-five million, four hundred sixty-five thousand, six hundred eighty-one".