78625361 has 2 divisors, whose sum is σ = 78625362. Its totient is φ = 78625360.

The previous prime is 78625321. The next prime is 78625367. The reversal of 78625361 is 16352687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56535361 + 22090000 = 7519^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 78625361 - 2¹⁴ = 78608977 is a prime.

It is not a weakly prime, because it can be changed into another prime (78625367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39312680 + 39312681.

It is an arithmetic number, because the mean of its divisors is an integer number (39312681).

Almost surely, 2^78625361 is an apocalyptic number.

It is an amenable number.

78625361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78625361 is an equidigital number, since it uses as much as digits as its factorization.

78625361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 78625361 is about 8867.0942816686. The cubic root of 78625361 is about 428.4046908155.

The spelling of 78625361 in words is "seventy-eight million, six hundred twenty-five thousand, three hundred sixty-one".