42558225 has 48 divisors (see below), whose sum is σ = 77137920. Its totient is φ = 20608000.

The previous prime is 42558223. The next prime is 42558227. The reversal of 42558225 is 52285524.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42558223) and next prime (42558227).

It is not a de Polignac number, because 42558225 - 2¹ = 42558223 is a prime.

It is a super-2 number, since 2×42558225² = 3622405030301250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42558223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36400 + ... + 37550.

It is an arithmetic number, because the mean of its divisors is an integer number (1607040).

Almost surely, 2^42558225 is an apocalyptic number.

It is an amenable number.

42558225 is a deficient number, since it is larger than the sum of its proper divisors (34579695).

42558225 is a wasteful number, since it uses less digits than its factorization.

42558225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1205 counting only the distinct ones).

The product of its digits is 32000, while the sum is 33.

The square root of 42558225 is about 6523.6665304106. Note that the first 3 decimals coincide. The cubic root of 42558225 is about 349.1358956054.

The spelling of 42558225 in words is "forty-two million, five hundred fifty-eight thousand, two hundred twenty-five".