15127220225 has 24 divisors (see below), whose sum is σ = 20272160832. Its totient is φ = 11131329600.

The previous prime is 15127220209. The next prime is 15127220239. The reversal of 15127220225 is 52202272151.

It is not a de Polignac number, because 15127220225 - 2⁴ = 15127220209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9740 + ... + 174210.

It is an arithmetic number, because the mean of its divisors is an integer number (844673368).

Almost surely, 2^15127220225 is an apocalyptic number.

It is an amenable number.

15127220225 is a deficient number, since it is larger than the sum of its proper divisors (5144940607).

15127220225 is a wasteful number, since it uses less digits than its factorization.

15127220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164777 (or 164772 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 15127220225 its reverse (52202272151), we get a palindrome (67329492376).

The spelling of 15127220225 in words is "fifteen billion, one hundred twenty-seven million, two hundred twenty thousand, two hundred twenty-five".