25512214021169 has 2 divisors, whose sum is σ = 25512214021170. Its totient is φ = 25512214021168.

The previous prime is 25512214021139. The next prime is 25512214021171. The reversal of 25512214021169 is 96112041221552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22379172419569 + 3133041601600 = 4730663^2 + 1770040^2 .

It is a cyclic number.

It is not a de Polignac number, because 25512214021169 - 2⁸ = 25512214020913 is a prime.

It is a super-2 number, since 2×25512214021169² (a number of 28 digits) contains 22 as substring.

Together with 25512214021171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25512214021109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756107010584 + 12756107010585.

It is an arithmetic number, because the mean of its divisors is an integer number (12756107010585).

Almost surely, 2^{25512214021169} is an apocalyptic number.

It is an amenable number.

25512214021169 is a deficient number, since it is larger than the sum of its proper divisors (1).

25512214021169 is an equidigital number, since it uses as much as digits as its factorization.

25512214021169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 25512214021169 in words is "twenty-five trillion, five hundred twelve billion, two hundred fourteen million, twenty-one thousand, one hundred sixty-nine".