427290225 has 36 divisors (see below), whose sum is σ = 715931856. Its totient is φ = 224870240.

The previous prime is 427290211. The next prime is 427290229. The reversal of 427290225 is 522092724.

It is not a de Polignac number, because 427290225 - 2⁴ = 427290209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427290229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 516262 + ... + 517088.

It is an arithmetic number, because the mean of its divisors is an integer number (19886996).

Almost surely, 2^427290225 is an apocalyptic number.

It is an amenable number.

427290225 is a deficient number, since it is larger than the sum of its proper divisors (288641631).

427290225 is an equidigital number, since it uses as much as digits as its factorization.

427290225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 427290225 is about 20670.9996129844. Note that the first 3 decimals coincide. The cubic root of 427290225 is about 753.1953888746.

The spelling of 427290225 in words is "four hundred twenty-seven million, two hundred ninety thousand, two hundred twenty-five".