25860853357 has 2 divisors, whose sum is σ = 25860853358. Its totient is φ = 25860853356.

The previous prime is 25860853349. The next prime is 25860853379. The reversal of 25860853357 is 75335806852.

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., 13519643076 + 12341210281 = 116274^2 + 111091^2 .

It is a cyclic number.

It is not a de Polignac number, because 25860853357 - 2³ = 25860853349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25860853307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930426678 + 12930426679.

It is an arithmetic number, because the mean of its divisors is an integer number (12930426679).

Almost surely, 2^25860853357 is an apocalyptic number.

It is an amenable number.

25860853357 is a deficient number, since it is larger than the sum of its proper divisors (1).

25860853357 is an equidigital number, since it uses as much as digits as its factorization.

25860853357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 25860853357 in words is "twenty-five billion, eight hundred sixty million, eight hundred fifty-three thousand, three hundred fifty-seven".