2505456365 has 4 divisors (see below), whose sum is σ = 3006547644. Its totient is φ = 2004365088.

The previous prime is 2505456347. The next prime is 2505456403. The reversal of 2505456365 is 5636545052.

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 1444456036 + 1061000329 = 38006^2 + 32573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505456365 is a prime.

It is an alternating number because its digits alternate between even and odd.

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, 250545632 + ... + 250545641.

It is an arithmetic number, because the mean of its divisors is an integer number (751636911).

Almost surely, 2^2505456365 is an apocalyptic number.

It is an amenable number.

2505456365 is a deficient number, since it is larger than the sum of its proper divisors (501091279).

2505456365 is an equidigital number, since it uses as much as digits as its factorization.

2505456365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501091278.

The product of its (nonzero) digits is 540000, while the sum is 41.

The square root of 2505456365 is about 50054.5339105260. The cubic root of 2505456365 is about 1358.1954810442.

The spelling of 2505456365 in words is "two billion, five hundred five million, four hundred fifty-six thousand, three hundred sixty-five".