2425252212121 has 4 divisors (see below), whose sum is σ = 2429455422772. Its totient is φ = 2421049001472.

The previous prime is 2425252212109. The next prime is 2425252212157. The reversal of 2425252212121 is 1212122525242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2025498240000 + 399753972121 = 1423200^2 + 632261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425252212121 - 2³⁹ = 1875496398233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2425252218121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101604460 + ... + 2101605613.

It is an arithmetic number, because the mean of its divisors is an integer number (607363855693).

Almost surely, 2^{2425252212121} is an apocalyptic number.

It is an amenable number.

2425252212121 is a deficient number, since it is larger than the sum of its proper divisors (4203210651).

2425252212121 is an equidigital number, since it uses as much as digits as its factorization.

2425252212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203210650.

The product of its digits is 12800, while the sum is 31.

Adding to 2425252212121 its reverse (1212122525242), we get a palindrome (3637374737363).

The spelling of 2425252212121 in words is "two trillion, four hundred twenty-five billion, two hundred fifty-two million, two hundred twelve thousand, one hundred twenty-one".