225521354 has 8 divisors (see below), whose sum is σ = 358181028. Its totient is φ = 106127680.

The previous prime is 225521341. The next prime is 225521381. The reversal of 225521354 is 453125522.

It can be written as a sum of positive squares in 2 ways, for example, as 222815329 + 2706025 = 14927^2 + 1645^2 .

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

It is a super-2 number, since 2×225521354² = 101719762219986632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3316457 + ... + 3316524.

Almost surely, 2^225521354 is an apocalyptic number.

225521354 is a deficient number, since it is larger than the sum of its proper divisors (132659674).

225521354 is a wasteful number, since it uses less digits than its factorization.

225521354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633000.

The product of its digits is 12000, while the sum is 29.

The square root of 225521354 is about 15017.3684112763. The cubic root of 225521354 is about 608.6896120458.

Adding to 225521354 its reverse (453125522), we get a palindrome (678646876).

The spelling of 225521354 in words is "two hundred twenty-five million, five hundred twenty-one thousand, three hundred fifty-four".