1321438825 has 12 divisors (see below), whose sum is σ = 1872667840. Its totient is φ = 906129360.

The previous prime is 1321438817. The next prime is 1321438861. The reversal of 1321438825 is 5288341231.

It is not a de Polignac number, because 1321438825 - 2³ = 1321438817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3775365 + ... + 3775714.

Almost surely, 2^1321438825 is an apocalyptic number.

It is an amenable number.

1321438825 is a deficient number, since it is larger than the sum of its proper divisors (551229015).

1321438825 is an equidigital number, since it uses as much as digits as its factorization.

1321438825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551096 (or 7551091 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 1321438825 is about 36351.6000335611. The cubic root of 1321438825 is about 1097.3597352928.

The spelling of 1321438825 in words is "one billion, three hundred twenty-one million, four hundred thirty-eight thousand, eight hundred twenty-five".