25517485303 has 2 divisors, whose sum is σ = 25517485304. Its totient is φ = 25517485302.

The previous prime is 25517485267. The next prime is 25517485307. The reversal of 25517485303 is 30358471552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25517485303 - 2¹⁷ = 25517354231 is a prime.

It is a super-2 number, since 2×25517485303² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25517485303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25517485307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12758742651 + 12758742652.

It is an arithmetic number, because the mean of its divisors is an integer number (12758742652).

Almost surely, 2^25517485303 is an apocalyptic number.

25517485303 is a deficient number, since it is larger than the sum of its proper divisors (1).

25517485303 is an equidigital number, since it uses as much as digits as its factorization.

25517485303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 25517485303 in words is "twenty-five billion, five hundred seventeen million, four hundred eighty-five thousand, three hundred three".