225724024139 has 4 divisors (see below), whose sum is σ = 226099605480. Its totient is φ = 225348442800.

The previous prime is 225724024129. The next prime is 225724024159. The reversal of 225724024139 is 931420427522.

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 225724024139 - 2³² = 221429056843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225724024096 and 225724024105.

It is not an unprimeable number, because it can be changed into a prime (225724024129) 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, 187789769 + ... + 187790970.

It is an arithmetic number, because the mean of its divisors is an integer number (56524901370).

Almost surely, 2^225724024139 is an apocalyptic number.

225724024139 is a deficient number, since it is larger than the sum of its proper divisors (375581341).

225724024139 is an equidigital number, since it uses as much as digits as its factorization.

225724024139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375581340.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 225724024139 in words is "two hundred twenty-five billion, seven hundred twenty-four million, twenty-four thousand, one hundred thirty-nine".