80625929 has 2 divisors, whose sum is σ = 80625930. Its totient is φ = 80625928.

The previous prime is 80625913. The next prime is 80625931. The reversal of 80625929 is 92952608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54051904 + 26574025 = 7352^2 + 5155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80625929 - 2⁴ = 80625913 is a prime.

It is a super-2 number, since 2×80625929² = 13001080854226082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 80625931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80625959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40312964 + 40312965.

It is an arithmetic number, because the mean of its divisors is an integer number (40312965).

Almost surely, 2^80625929 is an apocalyptic number.

It is an amenable number.

80625929 is a deficient number, since it is larger than the sum of its proper divisors (1).

80625929 is an equidigital number, since it uses as much as digits as its factorization.

80625929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 80625929 is about 8979.1942288827. The cubic root of 80625929 is about 432.0077891400.

The spelling of 80625929 in words is "eighty million, six hundred twenty-five thousand, nine hundred twenty-nine".