25133720521121 has 2 divisors, whose sum is σ = 25133720521122. Its totient is φ = 25133720521120.

The previous prime is 25133720521087. The next prime is 25133720521141. The reversal of 25133720521121 is 12112502733152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15895531086400 + 9238189434721 = 3986920^2 + 3039439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25133720521121 is a prime.

It is not a weakly prime, because it can be changed into another prime (25133720521141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12566860260560 + 12566860260561.

It is an arithmetic number, because the mean of its divisors is an integer number (12566860260561).

Almost surely, 2^{25133720521121} is an apocalyptic number.

It is an amenable number.

25133720521121 is a deficient number, since it is larger than the sum of its proper divisors (1).

25133720521121 is an equidigital number, since it uses as much as digits as its factorization.

25133720521121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 25133720521121 in words is "twenty-five trillion, one hundred thirty-three billion, seven hundred twenty million, five hundred twenty-one thousand, one hundred twenty-one".