25405264164347 has 2 divisors, whose sum is σ = 25405264164348. Its totient is φ = 25405264164346.

The previous prime is 25405264164299. The next prime is 25405264164409. The reversal of 25405264164347 is 74346146250452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25405264164347 is a prime.

It is not a weakly prime, because it can be changed into another prime (25405264164647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702632082173 + 12702632082174.

It is an arithmetic number, because the mean of its divisors is an integer number (12702632082174).

Almost surely, 2^{25405264164347} is an apocalyptic number.

25405264164347 is a deficient number, since it is larger than the sum of its proper divisors (1).

25405264164347 is an equidigital number, since it uses as much as digits as its factorization.

25405264164347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 53.

The spelling of 25405264164347 in words is "twenty-five trillion, four hundred five billion, two hundred sixty-four million, one hundred sixty-four thousand, three hundred forty-seven".