2521810225 has 24 divisors (see below), whose sum is σ = 3475706112. Its totient is φ = 1799428800.

The previous prime is 2521810189. The next prime is 2521810231. The reversal of 2521810225 is 5220181252.

2521810225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521810225 - 2¹³ = 2521802033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521810193 and 2521810202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71937 + ... + 101086.

It is an arithmetic number, because the mean of its divisors is an integer number (144821088).

Almost surely, 2^2521810225 is an apocalyptic number.

2521810225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521810225 is a deficient number, since it is larger than the sum of its proper divisors (953895887).

2521810225 is a wasteful number, since it uses less digits than its factorization.

2521810225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173097 (or 173092 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2521810225 is about 50217.6286278036. The cubic root of 2521810225 is about 1361.1441901104.

Adding to 2521810225 its reverse (5220181252), we get a palindrome (7741991477).

The spelling of 2521810225 in words is "two billion, five hundred twenty-one million, eight hundred ten thousand, two hundred twenty-five".