807815225993 has 2 divisors, whose sum is σ = 807815225994. Its totient is φ = 807815225992.

The previous prime is 807815225947. The next prime is 807815226083. The reversal of 807815225993 is 399522518708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803009547664 + 4805678329 = 896108^2 + 69323^2 .

It is a cyclic number.

It is not a de Polignac number, because 807815225993 - 2¹⁶ = 807815160457 is a prime.

It is a super-2 number, since 2×807815225993² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (807815225923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403907612996 + 403907612997.

It is an arithmetic number, because the mean of its divisors is an integer number (403907612997).

Almost surely, 2^807815225993 is an apocalyptic number.

It is an amenable number.

807815225993 is a deficient number, since it is larger than the sum of its proper divisors (1).

807815225993 is an equidigital number, since it uses as much as digits as its factorization.

807815225993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 807815225993 in words is "eight hundred seven billion, eight hundred fifteen million, two hundred twenty-five thousand, nine hundred ninety-three".