15117425 has 6 divisors (see below), whose sum is σ = 18745638. Its totient is φ = 12093920.

The previous prime is 15117419. The next prime is 15117457. The reversal of 15117425 is 52471151.

It can be written as a sum of positive squares in 3 ways, for example, as 1449616 + 13667809 = 1204^2 + 3697^2 .

It is not a de Polignac number, because 15117425 - 2⁸ = 15117169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15117394 and 15117403.

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 5 ways as a sum of consecutive naturals, for example, 302324 + ... + 302373.

It is an arithmetic number, because the mean of its divisors is an integer number (3124273).

Almost surely, 2^15117425 is an apocalyptic number.

It is an amenable number.

15117425 is a deficient number, since it is larger than the sum of its proper divisors (3628213).

15117425 is an equidigital number, since it uses as much as digits as its factorization.

15117425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604707 (or 604702 counting only the distinct ones).

The product of its digits is 1400, while the sum is 26.

The square root of 15117425 is about 3888.1132956744. The cubic root of 15117425 is about 247.2630797449.

Adding to 15117425 its reverse (52471151), we get a palindrome (67588576).

It can be divided in two parts, 151 and 17425, that added together give a cube (17576 = 26³).

The spelling of 15117425 in words is "fifteen million, one hundred seventeen thousand, four hundred twenty-five".