73778425 has 24 divisors (see below), whose sum is σ = 110062400. Its totient is φ = 47926080.

The previous prime is 73778423. The next prime is 73778431. The reversal of 73778425 is 52487737.

It is not a de Polignac number, because 73778425 - 2¹ = 73778423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73778423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7770 + ... + 14419.

Almost surely, 2^73778425 is an apocalyptic number.

It is an amenable number.

73778425 is a deficient number, since it is larger than the sum of its proper divisors (36283975).

73778425 is a wasteful number, since it uses less digits than its factorization.

73778425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22225 (or 22220 counting only the distinct ones).

The product of its digits is 329280, while the sum is 43.

The square root of 73778425 is about 8589.4368267076. The cubic root of 73778425 is about 419.4141965462.

The spelling of 73778425 in words is "seventy-three million, seven hundred seventy-eight thousand, four hundred twenty-five".