2521522005 has 16 divisors (see below), whose sum is σ = 4037213184. Its totient is φ = 1343885760.

The previous prime is 2521522001. The next prime is 2521522007. The reversal of 2521522005 is 5002251252.

It is not a de Polignac number, because 2521522005 - 2² = 2521522001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521522001) 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, 35074 + ... + 79203.

It is an arithmetic number, because the mean of its divisors is an integer number (252325824).

Almost surely, 2^2521522005 is an apocalyptic number.

It is an amenable number.

2521522005 is a deficient number, since it is larger than the sum of its proper divisors (1515691179).

2521522005 is a wasteful number, since it uses less digits than its factorization.

2521522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115756.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2521522005 is about 50214.7588364218. The cubic root of 2521522005 is about 1361.0923326627.

Adding to 2521522005 its reverse (5002251252), we get a palindrome (7523773257).

The spelling of 2521522005 in words is "two billion, five hundred twenty-one million, five hundred twenty-two thousand, five".