78025807 has 2 divisors, whose sum is σ = 78025808. Its totient is φ = 78025806.

The previous prime is 78025793. The next prime is 78025811. The reversal of 78025807 is 70852087.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78025807 is a prime.

It is a Chen prime.

It is equal to p_4560967 and since 78025807 and 4560967 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78025877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39012903 + 39012904.

It is an arithmetic number, because the mean of its divisors is an integer number (39012904).

Almost surely, 2^78025807 is an apocalyptic number.

78025807 is a deficient number, since it is larger than the sum of its proper divisors (1).

78025807 is an equidigital number, since it uses as much as digits as its factorization.

78025807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 78025807 is about 8833.2217791698. The cubic root of 78025807 is about 427.3129845562.

The spelling of 78025807 in words is "seventy-eight million, twenty-five thousand, eight hundred seven".