25113249619 has 2 divisors, whose sum is σ = 25113249620. Its totient is φ = 25113249618.

The previous prime is 25113249617. The next prime is 25113249653. The reversal of 25113249619 is 91694231152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25113249619 - 2¹ = 25113249617 is a prime.

It is a super-3 number, since 3×25113249619³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 25113249617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25113249617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12556624809 + 12556624810.

It is an arithmetic number, because the mean of its divisors is an integer number (12556624810).

Almost surely, 2^25113249619 is an apocalyptic number.

25113249619 is a deficient number, since it is larger than the sum of its proper divisors (1).

25113249619 is an equidigital number, since it uses as much as digits as its factorization.

25113249619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The spelling of 25113249619 in words is "twenty-five billion, one hundred thirteen million, two hundred forty-nine thousand, six hundred nineteen".