1315625 has 12 divisors (see below), whose sum is σ = 1648332. Its totient is φ = 1050000.

The previous prime is 1315621. The next prime is 1315627. The reversal of 1315625 is 5265131.

It can be written as a sum of positive squares in 6 ways, for example, as 1308736 + 6889 = 1144^2 + 83^2 .

It is not a de Polignac number, because 1315625 - 2² = 1315621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315625.

It is not an unprimeable number, because it can be changed into a prime (1315621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2915 + ... + 3335.

It is an arithmetic number, because the mean of its divisors is an integer number (137361).

2^1315625 is an apocalyptic number.

It is an amenable number.

1315625 is a deficient number, since it is larger than the sum of its proper divisors (332707).

1315625 is an frugal number, since it uses more digits than its factorization.

1315625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 426 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 1315625 is about 1147.0069746954. The cubic root of 1315625 is about 109.5748048448.

The spelling of 1315625 in words is "one million, three hundred fifteen thousand, six hundred twenty-five".