78225341 has 2 divisors, whose sum is σ = 78225342. Its totient is φ = 78225340.

The previous prime is 78225293. The next prime is 78225353. The reversal of 78225341 is 14352287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 11868025 = 8146^2 + 3445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78225341 is a prime.

It is a super-2 number, since 2×78225341² = 12238407949132562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78225298 and 78225307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78225361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39112670 + 39112671.

It is an arithmetic number, because the mean of its divisors is an integer number (39112671).

Almost surely, 2^78225341 is an apocalyptic number.

It is an amenable number.

78225341 is a deficient number, since it is larger than the sum of its proper divisors (1).

78225341 is an equidigital number, since it uses as much as digits as its factorization.

78225341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 78225341 is about 8844.5090875639. The cubic root of 78225341 is about 427.6769277800.

The spelling of 78225341 in words is "seventy-eight million, two hundred twenty-five thousand, three hundred forty-one".