225715139 has 8 divisors (see below), whose sum is σ = 243310032. Its totient is φ = 208153440.

The previous prime is 225715121. The next prime is 225715141. The reversal of 225715139 is 931517522.

225715139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225715139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225715099 and 225715108.

It is not an unprimeable number, because it can be changed into a prime (225715159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6869 + ... + 22329.

It is an arithmetic number, because the mean of its divisors is an integer number (30413754).

Almost surely, 2^225715139 is an apocalyptic number.

225715139 is a deficient number, since it is larger than the sum of its proper divisors (17594893).

225715139 is a wasteful number, since it uses less digits than its factorization.

225715139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16597.

The product of its digits is 18900, while the sum is 35.

The square root of 225715139 is about 15023.8190550872. The cubic root of 225715139 is about 608.8639061799.

The spelling of 225715139 in words is "two hundred twenty-five million, seven hundred fifteen thousand, one hundred thirty-nine".