225149331 has 16 divisors (see below), whose sum is σ = 327985920. Its totient is φ = 136247520.

The previous prime is 225149321. The next prime is 225149347. The reversal of 225149331 is 133941522.

225149331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225149331 - 2¹⁷ = 225018259 is a prime.

It is a super-2 number, since 2×225149331² = 101384442499495122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225149321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18586 + ... + 28208.

It is an arithmetic number, because the mean of its divisors is an integer number (20499120).

Almost surely, 2^225149331 is an apocalyptic number.

225149331 is a deficient number, since it is larger than the sum of its proper divisors (102836589).

225149331 is a wasteful number, since it uses less digits than its factorization.

225149331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10346.

The product of its digits is 6480, while the sum is 30.

The square root of 225149331 is about 15004.9768743574. The cubic root of 225149331 is about 608.3547270306.

The spelling of 225149331 in words is "two hundred twenty-five million, one hundred forty-nine thousand, three hundred thirty-one".