80826925957 has 2 divisors, whose sum is σ = 80826925958. Its totient is φ = 80826925956.

The previous prime is 80826925919. The next prime is 80826926017. The reversal of 80826925957 is 75952962808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79884804321 + 942121636 = 282639^2 + 30694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80826925957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80826925895 and 80826925904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80826920957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40413462978 + 40413462979.

It is an arithmetic number, because the mean of its divisors is an integer number (40413462979).

Almost surely, 2^80826925957 is an apocalyptic number.

It is an amenable number.

80826925957 is a deficient number, since it is larger than the sum of its proper divisors (1).

80826925957 is an equidigital number, since it uses as much as digits as its factorization.

80826925957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 80826925957 in words is "eighty billion, eight hundred twenty-six million, nine hundred twenty-five thousand, nine hundred fifty-seven".