78254425 has 12 divisors (see below), whose sum is σ = 98404416. Its totient is φ = 61720400.

The previous prime is 78254411. The next prime is 78254431. The reversal of 78254425 is 52445287.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-78254425 is a prime.

It is a super-2 number, since 2×78254425² = 12247510064161250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20269 + ... + 23818.

It is an arithmetic number, because the mean of its divisors is an integer number (8200368).

Almost surely, 2^78254425 is an apocalyptic number.

It is an amenable number.

78254425 is a deficient number, since it is larger than the sum of its proper divisors (20149991).

78254425 is a wasteful number, since it uses less digits than its factorization.

78254425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44168 (or 44163 counting only the distinct ones).

The product of its digits is 89600, while the sum is 37.

The square root of 78254425 is about 8846.1531187291. The cubic root of 78254425 is about 427.7299243085.

The spelling of 78254425 in words is "seventy-eight million, two hundred fifty-four thousand, four hundred twenty-five".