25593938947 has 2 divisors, whose sum is σ = 25593938948. Its totient is φ = 25593938946.

The previous prime is 25593938939. The next prime is 25593938983. The reversal of 25593938947 is 74983939552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25593938947 - 2³ = 25593938939 is a prime.

It is not a weakly prime, because it can be changed into another prime (25593938917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12796969473 + 12796969474.

It is an arithmetic number, because the mean of its divisors is an integer number (12796969474).

Almost surely, 2^25593938947 is an apocalyptic number.

25593938947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25593938947 is an equidigital number, since it uses as much as digits as its factorization.

25593938947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73483200, while the sum is 64.

The spelling of 25593938947 in words is "twenty-five billion, five hundred ninety-three million, nine hundred thirty-eight thousand, nine hundred forty-seven".