225029881 has 4 divisors (see below), whose sum is σ = 227133072. Its totient is φ = 222926692.

The previous prime is 225029869. The next prime is 225029927. The reversal of 225029881 is 188920522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225029881 - 2¹¹ = 225027833 is a prime.

It is a super-2 number, since 2×225029881² = 101276894685748322, 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 225029881.

It is not an unprimeable number, because it can be changed into a prime (225029851) 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, 1051435 + ... + 1051648.

It is an arithmetic number, because the mean of its divisors is an integer number (56783268).

Almost surely, 2^225029881 is an apocalyptic number.

It is an amenable number.

225029881 is a deficient number, since it is larger than the sum of its proper divisors (2103191).

225029881 is a wasteful number, since it uses less digits than its factorization.

225029881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103190.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 225029881 is about 15000.9960002661. The cubic root of 225029881 is about 608.2471231474.

It can be divided in two parts, 2250 and 29881, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 225029881 in words is "two hundred twenty-five million, twenty-nine thousand, eight hundred eighty-one".