1395612725 has 24 divisors (see below), whose sum is σ = 1865479560. Its totient is φ = 1029611520.

The previous prime is 1395612709. The next prime is 1395612737. The reversal of 1395612725 is 5272165931.

It can be written as a sum of positive squares in 12 ways, for example, as 535598449 + 860014276 = 23143^2 + 29326^2 .

It is not a de Polignac number, because 1395612725 - 2⁴ = 1395612709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 654461 + ... + 656589.

It is an arithmetic number, because the mean of its divisors is an integer number (77728315).

Almost surely, 2^1395612725 is an apocalyptic number.

It is an amenable number.

1395612725 is a deficient number, since it is larger than the sum of its proper divisors (469866835).

1395612725 is a wasteful number, since it uses less digits than its factorization.

1395612725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4169 (or 4164 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 1395612725 is about 37357.9004361862. The cubic root of 1395612725 is about 1117.5191487926.

The spelling of 1395612725 in words is "one billion, three hundred ninety-five million, six hundred twelve thousand, seven hundred twenty-five".