2521205025 has 48 divisors (see below), whose sum is σ = 4284487680. Its totient is φ = 1307476800.

The previous prime is 2521205021. The next prime is 2521205039. The reversal of 2521205025 is 5205021252.

It is not a de Polignac number, because 2521205025 - 2² = 2521205021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2521204986 and 2521205004.

It is not an unprimeable number, because it can be changed into a prime (2521205021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 769140 + ... + 772410.

It is an arithmetic number, because the mean of its divisors is an integer number (89260160).

Almost surely, 2^2521205025 is an apocalyptic number.

2521205025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521205025 is a deficient number, since it is larger than the sum of its proper divisors (1763282655).

2521205025 is a wasteful number, since it uses less digits than its factorization.

2521205025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3561 counting only the distinct ones).

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

The square root of 2521205025 is about 50211.6024938460. The cubic root of 2521205025 is about 1361.0352960625.

Adding to 2521205025 its reverse (5205021252), we get a palindrome (7726226277).

The spelling of 2521205025 in words is "two billion, five hundred twenty-one million, two hundred five thousand, twenty-five".