225400407 has 4 divisors (see below), whose sum is σ = 300533880. Its totient is φ = 150266936.

The previous prime is 225400393. The next prime is 225400447. The reversal of 225400407 is 704004522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225400407 - 2²² = 221206103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225400447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37566732 + ... + 37566737.

It is an arithmetic number, because the mean of its divisors is an integer number (75133470).

Almost surely, 2^225400407 is an apocalyptic number.

225400407 is a deficient number, since it is larger than the sum of its proper divisors (75133473).

225400407 is an equidigital number, since it uses as much as digits as its factorization.

225400407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75133472.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 225400407 is about 15013.3409672864. The cubic root of 225400407 is about 608.5807792667.

Adding to 225400407 its reverse (704004522), we get a palindrome (929404929).

The spelling of 225400407 in words is "two hundred twenty-five million, four hundred thousand, four hundred seven".