1325688887 has 2 divisors, whose sum is σ = 1325688888. Its totient is φ = 1325688886.

The previous prime is 1325688869. The next prime is 1325688893. The reversal of 1325688887 is 7888865231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1325688887 - 2²² = 1321494583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325688827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662844443 + 662844444.

It is an arithmetic number, because the mean of its divisors is an integer number (662844444).

Almost surely, 2^1325688887 is an apocalyptic number.

1325688887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325688887 is an equidigital number, since it uses as much as digits as its factorization.

1325688887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 56.

The square root of 1325688887 is about 36410.0108074689. The cubic root of 1325688887 is about 1098.5349330454.

The spelling of 1325688887 in words is "one billion, three hundred twenty-five million, six hundred eighty-eight thousand, eight hundred eighty-seven".