1397271625 has 16 divisors (see below), whose sum is σ = 1744863120. Its totient is φ = 1117132800.

The previous prime is 1397271619. The next prime is 1397271637. The reversal of 1397271625 is 5261727931.

1397271625 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 891201609 + 506070016 = 29853^2 + 22496^2 .

It is not a de Polignac number, because 1397271625 - 2¹⁷ = 1397140553 is a prime.

It is an unprimeable number.

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, 334047 + ... + 338203.

It is an arithmetic number, because the mean of its divisors is an integer number (109053945).

Almost surely, 2^1397271625 is an apocalyptic number.

It is an amenable number.

1397271625 is a deficient number, since it is larger than the sum of its proper divisors (347591495).

1397271625 is an equidigital number, since it uses as much as digits as its factorization.

1397271625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861 (or 6851 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 1397271625 is about 37380.0966424647. The cubic root of 1397271625 is about 1117.9617544998.

The spelling of 1397271625 in words is "one billion, three hundred ninety-seven million, two hundred seventy-one thousand, six hundred twenty-five".