225857079 has 72 divisors (see below), whose sum is σ = 405804672. Its totient is φ = 122958000.

The previous prime is 225857077. The next prime is 225857081. The reversal of 225857079 is 970758522.

It is a happy number.

225857079 is a `hidden beast` number, since 2 + 2 + 5 + 8 + 570 + 79 = 666.

It is an interprime number because it is at equal distance from previous prime (225857077) and next prime (225857081).

It is not a de Polignac number, because 225857079 - 2¹ = 225857077 is a prime.

It is a super-2 number, since 2×225857079² = 102022840268824482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225857077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 899704 + ... + 899954.

It is an arithmetic number, because the mean of its divisors is an integer number (5636176).

Almost surely, 2^225857079 is an apocalyptic number.

225857079 is a deficient number, since it is larger than the sum of its proper divisors (179947593).

225857079 is an equidigital number, since it uses as much as digits as its factorization.

225857079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 225857079 is about 15028.5421448655. The cubic root of 225857079 is about 608.9915065912.

The spelling of 225857079 in words is "two hundred twenty-five million, eight hundred fifty-seven thousand, seventy-nine".