225021982 has 8 divisors (see below), whose sum is σ = 338384376. Its totient is φ = 112227192.

The previous prime is 225021971. The next prime is 225022003. The reversal of 225021982 is 289120522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140908 + ... + 142495.

It is an arithmetic number, because the mean of its divisors is an integer number (42298047).

Almost surely, 2^225021982 is an apocalyptic number.

225021982 is a deficient number, since it is larger than the sum of its proper divisors (113362394).

225021982 is a wasteful number, since it uses less digits than its factorization.

225021982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283802.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 225021982 is about 15000.7327154376. The cubic root of 225021982 is about 608.2400061663.

The spelling of 225021982 in words is "two hundred twenty-five million, twenty-one thousand, nine hundred eighty-two".