15009825 has 12 divisors (see below), whose sum is σ = 24816368. Its totient is φ = 8005200.

The previous prime is 15009821. The next prime is 15009833. The reversal of 15009825 is 52890051.

It is not a de Polignac number, because 15009825 - 2² = 15009821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15009792 and 15009801.

It is not an unprimeable number, because it can be changed into a prime (15009821) 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, 99991 + ... + 100140.

Almost surely, 2^15009825 is an apocalyptic number.

15009825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15009825 is a deficient number, since it is larger than the sum of its proper divisors (9806543).

15009825 is a wasteful number, since it uses less digits than its factorization.

15009825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200144 (or 200139 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 15009825 is about 3874.2515406205. The cubic root of 15009825 is about 246.6750413113.

Adding to 15009825 its reverse (52890051), we get a palindrome (67899876).

It can be divided in two parts, 1500 and 9825, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 15009825 in words is "fifteen million, nine thousand, eight hundred twenty-five".