7258505165 has 4 divisors (see below), whose sum is σ = 8710206204. Its totient is φ = 5806804128.

The previous prime is 7258505123. The next prime is 7258505173. The reversal of 7258505165 is 5615058527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5677170409 + 1581334756 = 75347^2 + 39766^2 .

It is a cyclic number.

It is not a de Polignac number, because 7258505165 - 2³⁰ = 6184763341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725850512 + ... + 725850521.

It is an arithmetic number, because the mean of its divisors is an integer number (2177551551).

Almost surely, 2^7258505165 is an apocalyptic number.

It is an amenable number.

7258505165 is a deficient number, since it is larger than the sum of its proper divisors (1451701039).

7258505165 is a wasteful number, since it uses less digits than its factorization.

7258505165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451701038.

The product of its (nonzero) digits is 420000, while the sum is 44.

The square root of 7258505165 is about 85196.8612391325. The cubic root of 7258505165 is about 1936.1948623563.

The spelling of 7258505165 in words is "seven billion, two hundred fifty-eight million, five hundred five thousand, one hundred sixty-five".