225520412 has 24 divisors (see below), whose sum is σ = 438732672. Its totient is φ = 100728000.

The previous prime is 225520409. The next prime is 225520417. The reversal of 225520412 is 214025522.

225520412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225520417) 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, 68339 + ... + 71562.

It is an arithmetic number, because the mean of its divisors is an integer number (18280528).

Almost surely, 2^225520412 is an apocalyptic number.

It is an amenable number.

225520412 is a deficient number, since it is larger than the sum of its proper divisors (213212260).

225520412 is a wasteful number, since it uses less digits than its factorization.

225520412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139949 (or 139947 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 225520412 is about 15017.3370475594. The cubic root of 225520412 is about 608.6887645482.

Adding to 225520412 its reverse (214025522), we get a palindrome (439545934).

The spelling of 225520412 in words is "two hundred twenty-five million, five hundred twenty thousand, four hundred twelve".