1325603959 has 2 divisors, whose sum is σ = 1325603960. Its totient is φ = 1325603958.

The previous prime is 1325603899. The next prime is 1325603977. The reversal of 1325603959 is 9593065231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1325603959 - 2⁷ = 1325603831 is a prime.

It is a super-2 number, since 2×1325603959² = 3514451712232947362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325603159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662801979 + 662801980.

It is an arithmetic number, because the mean of its divisors is an integer number (662801980).

Almost surely, 2^1325603959 is an apocalyptic number.

1325603959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325603959 is an equidigital number, since it uses as much as digits as its factorization.

1325603959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 43.

The square root of 1325603959 is about 36408.8445161337. The cubic root of 1325603959 is about 1098.5114739548.

It can be divided in two parts, 1325 and 603959, that added together give a square (605284 = 778²).

The spelling of 1325603959 in words is "one billion, three hundred twenty-five million, six hundred three thousand, nine hundred fifty-nine".