25161147247 has 2 divisors, whose sum is σ = 25161147248. Its totient is φ = 25161147246.

The previous prime is 25161147239. The next prime is 25161147281. The reversal of 25161147247 is 74274116152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25161147247 - 2³ = 25161147239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25161144247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580573623 + 12580573624.

It is an arithmetic number, because the mean of its divisors is an integer number (12580573624).

Almost surely, 2^25161147247 is an apocalyptic number.

25161147247 is a deficient number, since it is larger than the sum of its proper divisors (1).

25161147247 is an equidigital number, since it uses as much as digits as its factorization.

25161147247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The spelling of 25161147247 in words is "twenty-five billion, one hundred sixty-one million, one hundred forty-seven thousand, two hundred forty-seven".