25474122647 has 2 divisors, whose sum is σ = 25474122648. Its totient is φ = 25474122646.

The previous prime is 25474122613. The next prime is 25474122659. The reversal of 25474122647 is 74622147452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25474122647 - 2⁸ = 25474122391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25474122598 and 25474122607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25474122677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12737061323 + 12737061324.

It is an arithmetic number, because the mean of its divisors is an integer number (12737061324).

Almost surely, 2^25474122647 is an apocalyptic number.

25474122647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25474122647 is an equidigital number, since it uses as much as digits as its factorization.

25474122647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 44.

The spelling of 25474122647 in words is "twenty-five billion, four hundred seventy-four million, one hundred twenty-two thousand, six hundred forty-seven".