25804302547 has 2 divisors, whose sum is σ = 25804302548. Its totient is φ = 25804302546.

The previous prime is 25804302521. The next prime is 25804302569. The reversal of 25804302547 is 74520340852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25804302547 is a prime.

It is a super-2 number, since 2×25804302547² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25804302247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12902151273 + 12902151274.

It is an arithmetic number, because the mean of its divisors is an integer number (12902151274).

Almost surely, 2^25804302547 is an apocalyptic number.

25804302547 is a deficient number, since it is larger than the sum of its proper divisors (1).

25804302547 is an equidigital number, since it uses as much as digits as its factorization.

25804302547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 25804302547 in words is "twenty-five billion, eight hundred four million, three hundred two thousand, five hundred forty-seven".