1325563667 has 2 divisors, whose sum is σ = 1325563668. Its totient is φ = 1325563666.

The previous prime is 1325563663. The next prime is 1325563703. The reversal of 1325563667 is 7663655231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1325563667 - 2² = 1325563663 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325563663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662781833 + 662781834.

It is an arithmetic number, because the mean of its divisors is an integer number (662781834).

Almost surely, 2^1325563667 is an apocalyptic number.

1325563667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325563667 is an equidigital number, since it uses as much as digits as its factorization.

1325563667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 44.

The square root of 1325563667 is about 36408.2911848387. The cubic root of 1325563667 is about 1098.5003440160.

The spelling of 1325563667 in words is "one billion, three hundred twenty-five million, five hundred sixty-three thousand, six hundred sixty-seven".