4025578 has 4 divisors (see below), whose sum is σ = 6038370. Its totient is φ = 2012788.

The previous prime is 4025551. The next prime is 4025599. The reversal of 4025578 is 8755204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2211169 + 1814409 = 1487^2 + 1347^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006393 + ... + 1006396.

Almost surely, 2^4025578 is an apocalyptic number.

4025578 is a deficient number, since it is larger than the sum of its proper divisors (2012792).

4025578 is a wasteful number, since it uses less digits than its factorization.

4025578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012791.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 4025578 is about 2006.3843101460. The cubic root of 4025578 is about 159.0777410796.

The spelling of 4025578 in words is "four million, twenty-five thousand, five hundred seventy-eight".