1397242325 has 12 divisors (see below), whose sum is σ = 1834497540. Its totient is φ = 1052040960.

The previous prime is 1397242303. The next prime is 1397242337. The reversal of 1397242325 is 5232427931.

It can be written as a sum of positive squares in 6 ways, for example, as 39025009 + 1358217316 = 6247^2 + 36854^2 .

It is not a de Polignac number, because 1397242325 - 2¹⁸ = 1396980181 is a prime.

It is a super-2 number, since 2×1397242325² = 3904572229542811250, which contains 22 as substring.

It is a congruent number.

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, 1643390 + ... + 1644239.

It is an arithmetic number, because the mean of its divisors is an integer number (152874795).

Almost surely, 2^1397242325 is an apocalyptic number.

It is an amenable number.

1397242325 is a deficient number, since it is larger than the sum of its proper divisors (437255215).

1397242325 is a wasteful number, since it uses less digits than its factorization.

1397242325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287656 (or 3287651 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 1397242325 is about 37379.7047206101. The cubic root of 1397242325 is about 1117.9539401021.

The spelling of 1397242325 in words is "one billion, three hundred ninety-seven million, two hundred forty-two thousand, three hundred twenty-five".