225724225105 has 16 divisors (see below), whose sum is σ = 277529506128. Its totient is φ = 176140800000.

The previous prime is 225724225037. The next prime is 225724225109. The reversal of 225724225105 is 501522427522.

It can be written as a sum of positive squares in 8 ways, for example, as 76815448336 + 148908776769 = 277156^2 + 385887^2 .

It is not a de Polignac number, because 225724225105 - 2⁷ = 225724224977 is a prime.

It is a super-2 number, since 2×225724225105² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225724225109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978355 + ... + 1186855.

It is an arithmetic number, because the mean of its divisors is an integer number (17345594133).

Almost surely, 2^225724225105 is an apocalyptic number.

It is an amenable number.

225724225105 is a deficient number, since it is larger than the sum of its proper divisors (51805281023).

225724225105 is a wasteful number, since it uses less digits than its factorization.

225724225105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213828.

The product of its (nonzero) digits is 112000, while the sum is 37.

The spelling of 225724225105 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred twenty-five thousand, one hundred five".