25310215253 has 2 divisors, whose sum is σ = 25310215254. Its totient is φ = 25310215252.

The previous prime is 25310215219. The next prime is 25310215331. The reversal of 25310215253 is 35251201352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17906989489 + 7403225764 = 133817^2 + 86042^2 .

It is a cyclic number.

It is not a de Polignac number, because 25310215253 - 2¹⁰ = 25310214229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25310211253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12655107626 + 12655107627.

It is an arithmetic number, because the mean of its divisors is an integer number (12655107627).

Almost surely, 2^25310215253 is an apocalyptic number.

It is an amenable number.

25310215253 is a deficient number, since it is larger than the sum of its proper divisors (1).

25310215253 is an equidigital number, since it uses as much as digits as its factorization.

25310215253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 25310215253 in words is "twenty-five billion, three hundred ten million, two hundred fifteen thousand, two hundred fifty-three".