2521245225 has 12 divisors (see below), whose sum is σ = 4168458896. Its totient is φ = 1344664080.

The previous prime is 2521245217. The next prime is 2521245247. The reversal of 2521245225 is 5225421252.

It is not a de Polignac number, because 2521245225 - 2³ = 2521245217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521245192 and 2521245201.

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, 16808227 + ... + 16808376.

Almost surely, 2^2521245225 is an apocalyptic number.

2521245225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521245225 is a deficient number, since it is larger than the sum of its proper divisors (1647213671).

2521245225 is a wasteful number, since it uses less digits than its factorization.

2521245225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33616616 (or 33616611 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 2521245225 is about 50212.0027981358. The cubic root of 2521245225 is about 1361.0425298161.

Adding to 2521245225 its reverse (5225421252), we get a palindrome (7746666477).

The spelling of 2521245225 in words is "two billion, five hundred twenty-one million, two hundred forty-five thousand, two hundred twenty-five".