2519225465 has 4 divisors (see below), whose sum is σ = 3023070564. Its totient is φ = 2015380368.

The previous prime is 2519225453. The next prime is 2519225537. The reversal of 2519225465 is 5645229152.

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 1719014521 + 800210944 = 41461^2 + 28288^2 .

It is a cyclic number.

It is not a de Polignac number, because 2519225465 - 2²⁰ = 2518176889 is a prime.

It is a Duffinian number.

It is a Curzon 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, 251922542 + ... + 251922551.

It is an arithmetic number, because the mean of its divisors is an integer number (755767641).

Almost surely, 2^2519225465 is an apocalyptic number.

It is an amenable number.

2519225465 is a deficient number, since it is larger than the sum of its proper divisors (503845099).

2519225465 is an equidigital number, since it uses as much as digits as its factorization.

2519225465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503845098.

The product of its digits is 216000, while the sum is 41.

The square root of 2519225465 is about 50191.8864459187. The cubic root of 2519225465 is about 1360.6789907171.

The spelling of 2519225465 in words is "two billion, five hundred nineteen million, two hundred twenty-five thousand, four hundred sixty-five".