25611625847 has 2 divisors, whose sum is σ = 25611625848. Its totient is φ = 25611625846.

The previous prime is 25611625817. The next prime is 25611625861. The reversal of 25611625847 is 74852611652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25611625847 - 2¹⁰ = 25611624823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25611625817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12805812923 + 12805812924.

It is an arithmetic number, because the mean of its divisors is an integer number (12805812924).

Almost surely, 2^25611625847 is an apocalyptic number.

25611625847 is a deficient number, since it is larger than the sum of its proper divisors (1).

25611625847 is an equidigital number, since it uses as much as digits as its factorization.

25611625847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 47.

The spelling of 25611625847 in words is "twenty-five billion, six hundred eleven million, six hundred twenty-five thousand, eight hundred forty-seven".