2521765004 has 24 divisors (see below), whose sum is σ = 4875225600. Its totient is φ = 1131745680.

The previous prime is 2521764913. The next prime is 2521765009. The reversal of 2521765004 is 4005671252.

It is not an unprimeable number, because it can be changed into a prime (2521765009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359264 + ... + 366215.

It is an arithmetic number, because the mean of its divisors is an integer number (203134400).

Almost surely, 2^2521765004 is an apocalyptic number.

It is an amenable number.

2521765004 is a deficient number, since it is larger than the sum of its proper divisors (2353460596).

2521765004 is a wasteful number, since it uses less digits than its factorization.

2521765004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725573 (or 725571 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2521765004 is about 50217.1783755320. The cubic root of 2521765004 is about 1361.1360540673.

The spelling of 2521765004 in words is "two billion, five hundred twenty-one million, seven hundred sixty-five thousand, four".