225142823 has 4 divisors (see below), whose sum is σ = 226386888. Its totient is φ = 223898760.

The previous prime is 225142793. The next prime is 225142843. The reversal of 225142823 is 328241522.

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

It is a cyclic number.

It is not a de Polignac number, because 225142823 - 2¹⁰ = 225141799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225142843) 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, 621761 + ... + 622122.

It is an arithmetic number, because the mean of its divisors is an integer number (56596722).

Almost surely, 2^225142823 is an apocalyptic number.

225142823 is a deficient number, since it is larger than the sum of its proper divisors (1244065).

225142823 is a wasteful number, since it uses less digits than its factorization.

225142823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244064.

The product of its digits is 7680, while the sum is 29.

The square root of 225142823 is about 15004.7600114097. The cubic root of 225142823 is about 608.3488654236.

The spelling of 225142823 in words is "two hundred twenty-five million, one hundred forty-two thousand, eight hundred twenty-three".