15672225 has 12 divisors (see below), whose sum is σ = 25911536. Its totient is φ = 8358480.

The previous prime is 15672221. The next prime is 15672227. The reversal of 15672225 is 52227651.

It is not a de Polignac number, because 15672225 - 2² = 15672221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15672192 and 15672201.

It is not an unprimeable number, because it can be changed into a prime (15672221) 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 11 ways as a sum of consecutive naturals, for example, 104407 + ... + 104556.

Almost surely, 2^15672225 is an apocalyptic number.

15672225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15672225 is a deficient number, since it is larger than the sum of its proper divisors (10239311).

15672225 is a wasteful number, since it uses less digits than its factorization.

15672225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208976 (or 208971 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 15672225 is about 3958.8161109099. The cubic root of 15672225 is about 250.2516133446.

Adding to 15672225 its reverse (52227651), we get a palindrome (67899876).

The spelling of 15672225 in words is "fifteen million, six hundred seventy-two thousand, two hundred twenty-five".