6505117225 has 6 divisors (see below), whose sum is σ = 8066345390. Its totient is φ = 5204093760.

The previous prime is 6505117183. The next prime is 6505117231. The reversal of 6505117225 is 5227115056.

It can be written as a sum of positive squares in 3 ways, for example, as 951290649 + 5553826576 = 30843^2 + 74524^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6505117225 is a prime.

It is a super-2 number, since 2×6505117225² = 84633100221983401250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130102320 + ... + 130102369.

Almost surely, 2^6505117225 is an apocalyptic number.

It is an amenable number.

6505117225 is a deficient number, since it is larger than the sum of its proper divisors (1561228165).

6505117225 is a wasteful number, since it uses less digits than its factorization.

6505117225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260204699 (or 260204694 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 6505117225 is about 80654.3069215773. The cubic root of 6505117225 is about 1866.7451960833.

The spelling of 6505117225 in words is "six billion, five hundred five million, one hundred seventeen thousand, two hundred twenty-five".