878840625425249 has 2 divisors, whose sum is σ = 878840625425250. Its totient is φ = 878840625425248.

The previous prime is 878840625425239. The next prime is 878840625425261. The reversal of 878840625425249 is 942524526048878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 815932488379024 + 62908137046225 = 28564532^2 + 7931465^2 .

It is a cyclic number.

It is not a de Polignac number, because 878840625425249 - 2⁴ = 878840625425233 is a prime.

It is not a weakly prime, because it can be changed into another prime (878840625425209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439420312712624 + 439420312712625.

It is an arithmetic number, because the mean of its divisors is an integer number (439420312712625).

Almost surely, 2^{878840625425249} is an apocalyptic number.

It is an amenable number.

878840625425249 is a deficient number, since it is larger than the sum of its proper divisors (1).

878840625425249 is an equidigital number, since it uses as much as digits as its factorization.

878840625425249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2477260800, while the sum is 74.

The spelling of 878840625425249 in words is "eight hundred seventy-eight trillion, eight hundred forty billion, six hundred twenty-five million, four hundred twenty-five thousand, two hundred forty-nine".