78325252387 has 2 divisors, whose sum is σ = 78325252388. Its totient is φ = 78325252386.

The previous prime is 78325252349. The next prime is 78325252429.

78325252387 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78325252387 is a prime.

It is a super-2 number, since 2×78325252387² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (78325252087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39162626193 + 39162626194.

It is an arithmetic number, because the mean of its divisors is an integer number (39162626194).

Almost surely, 2^78325252387 is an apocalyptic number.

78325252387 is a deficient number, since it is larger than the sum of its proper divisors (1).

78325252387 is an equidigital number, since it uses as much as digits as its factorization.

78325252387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 52.

The spelling of 78325252387 in words is "seventy-eight billion, three hundred twenty-five million, two hundred fifty-two thousand, three hundred eighty-seven".