1315725 has 24 divisors (see below), whose sum is σ = 2223072. Its totient is φ = 686400.

The previous prime is 1315723. The next prime is 1315729. The reversal of 1315725 is 5275131.

It is not a de Polignac number, because 1315725 - 2¹ = 1315723 is a prime.

It is a super-2 number, since 2×1315725² = 3462264551250, which contains 22 as substring.

1315725 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1315695 and 1315704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3810 + ... + 4140.

It is an arithmetic number, because the mean of its divisors is an integer number (92628).

2^1315725 is an apocalyptic number.

1315725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315725 is a deficient number, since it is larger than the sum of its proper divisors (907347).

1315725 is a wasteful number, since it uses less digits than its factorization.

1315725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 392 counting only the distinct ones).

The product of its digits is 1050, while the sum is 24.

The square root of 1315725 is about 1147.0505655811. The cubic root of 1315725 is about 109.5775810166.

The spelling of 1315725 in words is "one million, three hundred fifteen thousand, seven hundred twenty-five".