1325663651 has 8 divisors (see below), whose sum is σ = 1451042544. Its totient is φ = 1203628320.

The previous prime is 1325663617. The next prime is 1325663653. The reversal of 1325663651 is 1563665231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325663651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325663653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835061 + ... + 836646.

It is an arithmetic number, because the mean of its divisors is an integer number (181380318).

Almost surely, 2^1325663651 is an apocalyptic number.

1325663651 is a deficient number, since it is larger than the sum of its proper divisors (125378893).

1325663651 is a wasteful number, since it uses less digits than its factorization.

1325663651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671781.

The product of its digits is 97200, while the sum is 38.

The square root of 1325663651 is about 36409.6642527777. The cubic root of 1325663651 is about 1098.5279623794.

The spelling of 1325663651 in words is "one billion, three hundred twenty-five million, six hundred sixty-three thousand, six hundred fifty-one".