78425041 has 4 divisors (see below), whose sum is σ = 79595632. Its totient is φ = 77254452.

The previous prime is 78425033. The next prime is 78425057. The reversal of 78425041 is 14052487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78425041 - 2³ = 78425033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78424994 and 78425012.

It is not an unprimeable number, because it can be changed into a prime (78425441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585195 + ... + 585328.

It is an arithmetic number, because the mean of its divisors is an integer number (19898908).

Almost surely, 2^78425041 is an apocalyptic number.

It is an amenable number.

78425041 is a deficient number, since it is larger than the sum of its proper divisors (1170591).

78425041 is a wasteful number, since it uses less digits than its factorization.

78425041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170590.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 78425041 is about 8855.7913819150. The cubic root of 78425041 is about 428.0405546484.

The spelling of 78425041 in words is "seventy-eight million, four hundred twenty-five thousand, forty-one".