15630225 has 96 divisors (see below), whose sum is σ = 31497984. Its totient is φ = 6758400.

The previous prime is 15630211. The next prime is 15630227. The reversal of 15630225 is 52203651.

It is not a de Polignac number, because 15630225 - 2¹¹ = 15628177 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15630195 and 15630204.

It is not an unprimeable number, because it can be changed into a prime (15630227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 381205 + ... + 381245.

It is an arithmetic number, because the mean of its divisors is an integer number (328104).

Almost surely, 2^15630225 is an apocalyptic number.

15630225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15630225 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

15630225 is a wasteful number, since it uses less digits than its factorization.

15630225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 15630225 is about 3953.5079359981. The cubic root of 15630225 is about 250.0278635610.

Adding to 15630225 its reverse (52203651), we get a palindrome (67833876).

It can be divided in two parts, 156 and 30225, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 15630225 in words is "fifteen million, six hundred thirty thousand, two hundred twenty-five".