2521100525 has 12 divisors (see below), whose sum is σ = 3131600532. Its totient is φ = 2013373440.

The previous prime is 2521100507. The next prime is 2521100581. The reversal of 2521100525 is 5250011252.

2521100525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 769008361 + 1752092164 = 27731^2 + 41858^2 .

It is not a de Polignac number, because 2521100525 - 2²⁴ = 2504323309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2521100525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72962 + ... + 101811.

It is an arithmetic number, because the mean of its divisors is an integer number (260966711).

Almost surely, 2^2521100525 is an apocalyptic number.

2521100525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521100525 is a deficient number, since it is larger than the sum of its proper divisors (610500007).

2521100525 is a wasteful number, since it uses less digits than its factorization.

2521100525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175360 (or 175355 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2521100525 is about 50210.5618869178. The cubic root of 2521100525 is about 1361.0164915421.

Adding to 2521100525 its reverse (5250011252), we get a palindrome (7771111777).

The spelling of 2521100525 in words is "two billion, five hundred twenty-one million, one hundred thousand, five hundred twenty-five".