225691485 has 16 divisors (see below), whose sum is σ = 373559040. Its totient is φ = 116217920.

The previous prime is 225691447. The next prime is 225691493. The reversal of 225691485 is 584196522.

It is not a de Polignac number, because 225691485 - 2¹¹ = 225689437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258981 + ... + 259850.

It is an arithmetic number, because the mean of its divisors is an integer number (23347440).

Almost surely, 2^225691485 is an apocalyptic number.

It is an amenable number.

225691485 is a deficient number, since it is larger than the sum of its proper divisors (147867555).

225691485 is a wasteful number, since it uses less digits than its factorization.

225691485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518868.

The product of its digits is 172800, while the sum is 42.

The square root of 225691485 is about 15023.0318178456. The cubic root of 225691485 is about 608.8426366422.

The spelling of 225691485 in words is "two hundred twenty-five million, six hundred ninety-one thousand, four hundred eighty-five".