2521515435225 has 12 divisors (see below), whose sum is σ = 4168905519696. Its totient is φ = 1344808232080.

The previous prime is 2521515435209. The next prime is 2521515435253. The reversal of 2521515435225 is 5225345151252.

It is not a de Polignac number, because 2521515435225 - 2⁴ = 2521515435209 is a prime.

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, 16810102827 + ... + 16810102976.

It is an arithmetic number, because the mean of its divisors is an integer number (347408793308).

Almost surely, 2^{2521515435225} is an apocalyptic number.

2521515435225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521515435225 is a deficient number, since it is larger than the sum of its proper divisors (1647390084471).

2521515435225 is a wasteful number, since it uses less digits than its factorization.

2521515435225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33620205816 (or 33620205811 counting only the distinct ones).

The product of its digits is 600000, while the sum is 42.

The spelling of 2521515435225 in words is "two trillion, five hundred twenty-one billion, five hundred fifteen million, four hundred thirty-five thousand, two hundred twenty-five".