225690370 has 8 divisors (see below), whose sum is σ = 406242684. Its totient is φ = 90276144.

The previous prime is 225690349. The next prime is 225690389. The reversal of 225690370 is 73096522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 208773601 + 16916769 = 14449^2 + 4113^2 .

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

It is a super-2 number, since 2×225690370² = 101872286221473800, which contains 22 as substring.

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, 11284509 + ... + 11284528.

Almost surely, 2^225690370 is an apocalyptic number.

225690370 is a deficient number, since it is larger than the sum of its proper divisors (180552314).

225690370 is a wasteful number, since it uses less digits than its factorization.

225690370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22569044.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 225690370 is about 15022.9947081133. The cubic root of 225690370 is about 608.8416340041.

The spelling of 225690370 in words is "two hundred twenty-five million, six hundred ninety thousand, three hundred seventy".