2525209930121 has 2 divisors, whose sum is σ = 2525209930122. Its totient is φ = 2525209930120.

The previous prime is 2525209930109. The next prime is 2525209930157. The reversal of 2525209930121 is 1210399025252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2503787216896 + 21422713225 = 1582336^2 + 146365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2525209930121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2525209933121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262604965060 + 1262604965061.

It is an arithmetic number, because the mean of its divisors is an integer number (1262604965061).

Almost surely, 2^{2525209930121} is an apocalyptic number.

It is an amenable number.

2525209930121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525209930121 is an equidigital number, since it uses as much as digits as its factorization.

2525209930121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 2525209930121 in words is "two trillion, five hundred twenty-five billion, two hundred nine million, nine hundred thirty thousand, one hundred twenty-one".