225940771 has 4 divisors (see below), whose sum is σ = 258218032. Its totient is φ = 193663512.

The previous prime is 225940763. The next prime is 225940777. The reversal of 225940771 is 177049522.

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

It is not a de Polignac number, because 225940771 - 2³ = 225940763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225940771.

It is not an unprimeable number, because it can be changed into a prime (225940777) 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, 16138620 + ... + 16138633.

It is an arithmetic number, because the mean of its divisors is an integer number (64554508).

Almost surely, 2^225940771 is an apocalyptic number.

225940771 is a deficient number, since it is larger than the sum of its proper divisors (32277261).

225940771 is an equidigital number, since it uses as much as digits as its factorization.

225940771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32277260.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 225940771 is about 15031.3263220516. The cubic root of 225940771 is about 609.0667184956.

The spelling of 225940771 in words is "two hundred twenty-five million, nine hundred forty thousand, seven hundred seventy-one".