15225397 has 8 divisors (see below), whose sum is σ = 16996320. Its totient is φ = 13518960.

The previous prime is 15225383. The next prime is 15225401. The reversal of 15225397 is 79352251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15225397 - 2⁷ = 15225269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15622 + ... + 16567.

It is an arithmetic number, because the mean of its divisors is an integer number (2124540).

Almost surely, 2^15225397 is an apocalyptic number.

It is an amenable number.

15225397 is a deficient number, since it is larger than the sum of its proper divisors (1770923).

15225397 is a wasteful number, since it uses less digits than its factorization.

15225397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32243.

The product of its digits is 18900, while the sum is 34.

The square root of 15225397 is about 3901.9734750508. The cubic root of 15225397 is about 247.8503530505.

The spelling of 15225397 in words is "fifteen million, two hundred twenty-five thousand, three hundred ninety-seven".