25135549319 has 2 divisors, whose sum is σ = 25135549320. Its totient is φ = 25135549318.

The previous prime is 25135549303. The next prime is 25135549321. The reversal of 25135549319 is 91394553152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25135549319 - 2⁴ = 25135549303 is a prime.

It is a super-2 number, since 2×25135549319² (a number of 22 digits) contains 22 as substring.

Together with 25135549321, 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 (25135549819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567774659 + 12567774660.

It is an arithmetic number, because the mean of its divisors is an integer number (12567774660).

Almost surely, 2^25135549319 is an apocalyptic number.

25135549319 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135549319 is an equidigital number, since it uses as much as digits as its factorization.

25135549319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 47.

The spelling of 25135549319 in words is "twenty-five billion, one hundred thirty-five million, five hundred forty-nine thousand, three hundred nineteen".