2521223465 has 16 divisors (see below), whose sum is σ = 3042458496. Its totient is φ = 2005680000.

The previous prime is 2521223461. The next prime is 2521223479. The reversal of 2521223465 is 5643221252.

It is not a de Polignac number, because 2521223465 - 2² = 2521223461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521223461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1031645 + ... + 1034085.

It is an arithmetic number, because the mean of its divisors is an integer number (190153656).

Almost surely, 2^2521223465 is an apocalyptic number.

It is an amenable number.

2521223465 is a deficient number, since it is larger than the sum of its proper divisors (521235031).

2521223465 is a wasteful number, since it uses less digits than its factorization.

2521223465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520.

The product of its digits is 28800, while the sum is 32.

The square root of 2521223465 is about 50211.7861164090. The cubic root of 2521223465 is about 1361.0386142416.

The spelling of 2521223465 in words is "two billion, five hundred twenty-one million, two hundred twenty-three thousand, four hundred sixty-five".