2565013504 has 34 divisors (see below), whose sum is σ = 5130118940. Its totient is φ = 1282473984.

The previous prime is 2565013487. The next prime is 2565013589. The reversal of 2565013504 is 4053105652.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45967 + ... + 85105.

Almost surely, 2^2565013504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2565013504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565059470).

2565013504 is an abundant number, since it is smaller than the sum of its proper divisors (2565105436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565013504 is an frugal number, since it uses more digits than its factorization.

2565013504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39171 (or 39141 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2565013504 is about 50645.9623662143. The cubic root of 2565013504 is about 1368.8731928511.

The spelling of 2565013504 in words is "two billion, five hundred sixty-five million, thirteen thousand, five hundred four".