5245161265 has 4 divisors (see below), whose sum is σ = 6294193524. Its totient is φ = 4196129008.

The previous prime is 5245161239. The next prime is 5245161323. The reversal of 5245161265 is 5621615425.

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 620209216 + 4624952049 = 24904^2 + 68007^2 .

It is a cyclic number.

It is not a de Polignac number, because 5245161265 - 2²³ = 5236772657 is a prime.

It is a Duffinian 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, 524516122 + ... + 524516131.

It is an arithmetic number, because the mean of its divisors is an integer number (1573548381).

Almost surely, 2^5245161265 is an apocalyptic number.

It is an amenable number.

5245161265 is a deficient number, since it is larger than the sum of its proper divisors (1049032259).

5245161265 is a wasteful number, since it uses less digits than its factorization.

5245161265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049032258.

The product of its digits is 72000, while the sum is 37.

The square root of 5245161265 is about 72423.4855899659. The cubic root of 5245161265 is about 1737.4792036570.

The spelling of 5245161265 in words is "five billion, two hundred forty-five million, one hundred sixty-one thousand, two hundred sixty-five".