25247938847 has 2 divisors, whose sum is σ = 25247938848. Its totient is φ = 25247938846.

The previous prime is 25247938823. The next prime is 25247938861. The reversal of 25247938847 is 74883974252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25247938847 - 2⁶ = 25247938783 is a prime.

It is a super-3 number, since 3×25247938847³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25247938897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12623969423 + 12623969424.

It is an arithmetic number, because the mean of its divisors is an integer number (12623969424).

Almost surely, 2^25247938847 is an apocalyptic number.

25247938847 is a deficient number, since it is larger than the sum of its proper divisors (1).

25247938847 is an equidigital number, since it uses as much as digits as its factorization.

25247938847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 59.

The spelling of 25247938847 in words is "twenty-five billion, two hundred forty-seven million, nine hundred thirty-eight thousand, eight hundred forty-seven".