25517485267 has 2 divisors, whose sum is σ = 25517485268. Its totient is φ = 25517485266.

The previous prime is 25517485243. The next prime is 25517485303. The reversal of 25517485267 is 76258471552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25517485267 is a prime.

It is a super-3 number, since 3×25517485267³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25517405267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12758742633 + 12758742634.

It is an arithmetic number, because the mean of its divisors is an integer number (12758742634).

Almost surely, 2^25517485267 is an apocalyptic number.

25517485267 is a deficient number, since it is larger than the sum of its proper divisors (1).

25517485267 is an equidigital number, since it uses as much as digits as its factorization.

25517485267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704000, while the sum is 52.

The spelling of 25517485267 in words is "twenty-five billion, five hundred seventeen million, four hundred eighty-five thousand, two hundred sixty-seven".