1325621697 has 16 divisors (see below), whose sum is σ = 1924680000. Its totient is φ = 808363584.

The previous prime is 1325621651. The next prime is 1325621711. The reversal of 1325621697 is 7961265231.

It is not a de Polignac number, because 1325621697 - 2⁸ = 1325621441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1325621797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399322 + ... + 402627.

It is an arithmetic number, because the mean of its divisors is an integer number (120292500).

Almost surely, 2^1325621697 is an apocalyptic number.

It is an amenable number.

1325621697 is a deficient number, since it is larger than the sum of its proper divisors (599058303).

1325621697 is a wasteful number, since it uses less digits than its factorization.

1325621697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802000.

The product of its digits is 136080, while the sum is 42.

The square root of 1325621697 is about 36409.0881099761. The cubic root of 1325621697 is about 1098.5163736861.

The spelling of 1325621697 in words is "one billion, three hundred twenty-five million, six hundred twenty-one thousand, six hundred ninety-seven".