15135825 has 24 divisors (see below), whose sum is σ = 25891200. Its totient is φ = 7792960.

The previous prime is 15135821. The next prime is 15135839. The reversal of 15135825 is 52853151.

It is not a de Polignac number, because 15135825 - 2² = 15135821 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15135792 and 15135801.

It is not an unprimeable number, because it can be changed into a prime (15135821) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1305 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (1078800).

Almost surely, 2^15135825 is an apocalyptic number.

15135825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15135825 is a deficient number, since it is larger than the sum of its proper divisors (10755375).

15135825 is a wasteful number, since it uses less digits than its factorization.

15135825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001 (or 6996 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 15135825 is about 3890.4787623119. The cubic root of 15135825 is about 247.3633568769.

Adding to 15135825 its reverse (52853151), we get a palindrome (67988976).

The spelling of 15135825 in words is "fifteen million, one hundred thirty-five thousand, eight hundred twenty-five".