225666415 has 32 divisors (see below), whose sum is σ = 310153536. Its totient is φ = 156149760.

The previous prime is 225666407. The next prime is 225666437. The reversal of 225666415 is 514666522.

It is not a de Polignac number, because 225666415 - 2³ = 225666407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489285 + ... + 489745.

It is an arithmetic number, because the mean of its divisors is an integer number (9692298).

Almost surely, 2^225666415 is an apocalyptic number.

225666415 is a deficient number, since it is larger than the sum of its proper divisors (84487121).

225666415 is a wasteful number, since it uses less digits than its factorization.

225666415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 86400, while the sum is 37.

The square root of 225666415 is about 15022.1974091675. The cubic root of 225666415 is about 608.8200922233.

The spelling of 225666415 in words is "two hundred twenty-five million, six hundred sixty-six thousand, four hundred fifteen".