225125442 has 12 divisors (see below), whose sum is σ = 487771830. Its totient is φ = 75041808.

The previous prime is 225125437. The next prime is 225125443. The reversal of 225125442 is 244521522.

It can be written as a sum of positive squares in only one way, i.e., 178462881 + 46662561 = 13359^2 + 6831^2 .

It is not an unprimeable number, because it can be changed into a prime (225125443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6253467 + ... + 6253502.

Almost surely, 2^225125442 is an apocalyptic number.

225125442 is an abundant number, since it is smaller than the sum of its proper divisors (262646388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225125442 is a wasteful number, since it uses less digits than its factorization.

225125442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12506977 (or 12506974 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 225125442 is about 15004.1808173589. The cubic root of 225125442 is about 608.3332101999. Note that the first 3 decimals are identical.

Adding to 225125442 its reverse (244521522), we get a palindrome (469646964).

The spelling of 225125442 in words is "two hundred twenty-five million, one hundred twenty-five thousand, four hundred forty-two".