225620986 has 16 divisors (see below), whose sum is σ = 351073800. Its totient is φ = 108618048.

The previous prime is 225620939. The next prime is 225620987. The reversal of 225620986 is 689026522.

It can be written as a sum of positive squares in 4 ways, for example, as 225570361 + 50625 = 15019^2 + 225^2 .

It is a super-2 number, since 2×225620986² = 101809658647224392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225620987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16420 + ... + 26848.

Almost surely, 2^225620986 is an apocalyptic number.

225620986 is a deficient number, since it is larger than the sum of its proper divisors (125452814).

225620986 is a wasteful number, since it uses less digits than its factorization.

225620986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 225620986 is about 15020.6852706526. The cubic root of 225620986 is about 608.7792355395.

The spelling of 225620986 in words is "two hundred twenty-five million, six hundred twenty thousand, nine hundred eighty-six".