15225155 has 8 divisors (see below), whose sum is σ = 19931184. Its totient is φ = 11072800.

The previous prime is 15225113. The next prime is 15225157. The reversal of 15225155 is 55152251.

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

It is not a de Polignac number, because 15225155 - 2¹⁴ = 15208771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15225157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138356 + ... + 138465.

It is an arithmetic number, because the mean of its divisors is an integer number (2491398).

Almost surely, 2^15225155 is an apocalyptic number.

15225155 is a deficient number, since it is larger than the sum of its proper divisors (4706029).

15225155 is a wasteful number, since it uses less digits than its factorization.

15225155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276837.

The product of its digits is 2500, while the sum is 26.

The square root of 15225155 is about 3901.9424649782. The cubic root of 15225155 is about 247.8490398915.

The spelling of 15225155 in words is "fifteen million, two hundred twenty-five thousand, one hundred fifty-five".