225340401 has 32 divisors (see below), whose sum is σ = 354307968. Its totient is φ = 125591040.

The previous prime is 225340391. The next prime is 225340417. The reversal of 225340401 is 104043522.

It is not a de Polignac number, because 225340401 - 2⁵ = 225340369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225340421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135165 + ... + 136821.

It is an arithmetic number, because the mean of its divisors is an integer number (11072124).

Almost surely, 2^225340401 is an apocalyptic number.

It is an amenable number.

225340401 is a deficient number, since it is larger than the sum of its proper divisors (128967567).

225340401 is a wasteful number, since it uses less digits than its factorization.

225340401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 225340401 is about 15011.3424116566. The cubic root of 225340401 is about 608.5267691020.

Adding to 225340401 its reverse (104043522), we get a palindrome (329383923).

The spelling of 225340401 in words is "two hundred twenty-five million, three hundred forty thousand, four hundred one".