78625235827 has 2 divisors, whose sum is σ = 78625235828. Its totient is φ = 78625235826.

The previous prime is 78625235813. The next prime is 78625235831. The reversal of 78625235827 is 72853252687.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78625235827 is a prime.

It is not a weakly prime, because it can be changed into another prime (78625235837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39312617913 + 39312617914.

It is an arithmetic number, because the mean of its divisors is an integer number (39312617914).

Almost surely, 2^78625235827 is an apocalyptic number.

78625235827 is a deficient number, since it is larger than the sum of its proper divisors (1).

78625235827 is an equidigital number, since it uses as much as digits as its factorization.

78625235827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11289600, while the sum is 55.

The spelling of 78625235827 in words is "seventy-eight billion, six hundred twenty-five million, two hundred thirty-five thousand, eight hundred twenty-seven".