225238761 has 12 divisors (see below), whose sum is σ = 354921840. Its totient is φ = 136508280.

The previous prime is 225238757. The next prime is 225238771. The reversal of 225238761 is 167832522.

It is not a de Polignac number, because 225238761 - 2² = 225238757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225238751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1137471 + ... + 1137668.

It is an arithmetic number, because the mean of its divisors is an integer number (29576820).

Almost surely, 2^225238761 is an apocalyptic number.

It is an amenable number.

225238761 is a deficient number, since it is larger than the sum of its proper divisors (129683079).

225238761 is a wasteful number, since it uses less digits than its factorization.

225238761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275156 (or 2275153 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 225238761 is about 15007.9565897560. The cubic root of 225238761 is about 608.4352631520.

The spelling of 225238761 in words is "two hundred twenty-five million, two hundred thirty-eight thousand, seven hundred sixty-one".