225140406 has 16 divisors (see below), whose sum is σ = 450508800. Its totient is φ = 75008808.

The previous prime is 225140359. The next prime is 225140407. The reversal of 225140406 is 604041522.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225140407) 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, 5055 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (28156800).

Almost surely, 2^225140406 is an apocalyptic number.

225140406 is an abundant number, since it is smaller than the sum of its proper divisors (225368394).

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

225140406 is a wasteful number, since it uses less digits than its factorization.

225140406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19003.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 225140406 is about 15004.6794700853. The cubic root of 225140406 is about 608.3466884581.

Adding to 225140406 its reverse (604041522), we get a palindrome (829181928).

The spelling of 225140406 in words is "two hundred twenty-five million, one hundred forty thousand, four hundred six".