225940785 has 16 divisors (see below), whose sum is σ = 413149056. Its totient is φ = 103287168.

The previous prime is 225940777. The next prime is 225940787. The reversal of 225940785 is 587049522.

It is not a de Polignac number, because 225940785 - 2³ = 225940777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225940787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075804 + ... + 1076013.

It is an arithmetic number, because the mean of its divisors is an integer number (25821816).

Almost surely, 2^225940785 is an apocalyptic number.

It is an amenable number.

225940785 is a deficient number, since it is larger than the sum of its proper divisors (187208271).

225940785 is a wasteful number, since it uses less digits than its factorization.

225940785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151832.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 225940785 is about 15031.3267877457. The cubic root of 225940785 is about 609.0667310755.

The spelling of 225940785 in words is "two hundred twenty-five million, nine hundred forty thousand, seven hundred eighty-five".