2520521025 has 24 divisors (see below), whose sum is σ = 4546104864. Its totient is φ = 1222070400.

The previous prime is 2520521021. The next prime is 2520521027. The reversal of 2520521025 is 5201250252.

It is not a de Polignac number, because 2520521025 - 2² = 2520521021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2520520986 and 2520521004.

It is not an unprimeable number, because it can be changed into a prime (2520521021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1526764 + ... + 1528413.

It is an arithmetic number, because the mean of its divisors is an integer number (189421036).

Almost surely, 2^2520521025 is an apocalyptic number.

2520521025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2520521025 is a deficient number, since it is larger than the sum of its proper divisors (2025583839).

2520521025 is a wasteful number, since it uses less digits than its factorization.

2520521025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055201 (or 3055196 counting only the distinct ones).

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

The square root of 2520521025 is about 50204.7908570487. The cubic root of 2520521025 is about 1360.9122024975.

Adding to 2520521025 its reverse (5201250252), we get a palindrome (7721771277).

The spelling of 2520521025 in words is "two billion, five hundred twenty million, five hundred twenty-one thousand, twenty-five".