25320012269 has 2 divisors, whose sum is σ = 25320012270. Its totient is φ = 25320012268.

The previous prime is 25320012251. The next prime is 25320012271. The reversal of 25320012269 is 96221002352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25239676900 + 80335369 = 158870^2 + 8963^2 .

It is a cyclic number.

It is not a de Polignac number, because 25320012269 - 2²⁸ = 25051576813 is a prime.

It is a super-2 number, since 2×25320012269² (a number of 22 digits) contains 22 as substring.

Together with 25320012271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25320012209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12660006134 + 12660006135.

It is an arithmetic number, because the mean of its divisors is an integer number (12660006135).

Almost surely, 2^25320012269 is an apocalyptic number.

It is an amenable number.

25320012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25320012269 is an equidigital number, since it uses as much as digits as its factorization.

25320012269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 25320012269 in words is "twenty-five billion, three hundred twenty million, twelve thousand, two hundred sixty-nine".