15225565065 has 32 divisors (see below), whose sum is σ = 25211329920. Its totient is φ = 7837057536.

The previous prime is 15225565063. The next prime is 15225565067. The reversal of 15225565065 is 56056552251.

It is an interprime number because it is at equal distance from previous prime (15225565063) and next prime (15225565067).

It is not a de Polignac number, because 15225565065 - 2¹ = 15225565063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15225565063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1335429 + ... + 1346781.

It is an arithmetic number, because the mean of its divisors is an integer number (787854060).

Almost surely, 2^15225565065 is an apocalyptic number.

15225565065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15225565065 is a deficient number, since it is larger than the sum of its proper divisors (9985764855).

15225565065 is a wasteful number, since it uses less digits than its factorization.

15225565065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14473.

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 15225565065 in words is "fifteen billion, two hundred twenty-five million, five hundred sixty-five thousand, sixty-five".