225007831 has 4 divisors (see below), whose sum is σ = 225038200. Its totient is φ = 224977464.

The previous prime is 225007829. The next prime is 225007883. The reversal of 225007831 is 138700522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225007831 - 2¹ = 225007829 is a prime.

It is a super-2 number, since 2×225007831² = 101257048022649122, which contains 22 as substring.

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 225007831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225037831) 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, 4060 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (56259550).

Almost surely, 2^225007831 is an apocalyptic number.

225007831 is a deficient number, since it is larger than the sum of its proper divisors (30369).

225007831 is a wasteful number, since it uses less digits than its factorization.

225007831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30368.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 225007831 is about 15000.2610310621. The cubic root of 225007831 is about 608.2272557309.

The spelling of 225007831 in words is "two hundred twenty-five million, seven thousand, eight hundred thirty-one".