2521015525 has 12 divisors (see below), whose sum is σ = 3572639392. Its totient is φ = 1728696240.

The previous prime is 2521015463. The next prime is 2521015529. The reversal of 2521015525 is 5255101252.

It is not a de Polignac number, because 2521015525 - 2³¹ = 373531877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2521015493 and 2521015502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521015529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7202727 + ... + 7203076.

Almost surely, 2^2521015525 is an apocalyptic number.

2521015525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521015525 is a deficient number, since it is larger than the sum of its proper divisors (1051623867).

2521015525 is a wasteful number, since it uses less digits than its factorization.

2521015525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14405820 (or 14405815 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2521015525 is about 50209.7154443241. The cubic root of 2521015525 is about 1361.0011956161.

Adding to 2521015525 its reverse (5255101252), we get a palindrome (7776116777).

The spelling of 2521015525 in words is "two billion, five hundred twenty-one million, fifteen thousand, five hundred twenty-five".