225478857 has 8 divisors (see below), whose sum is σ = 311005440. Its totient is φ = 145135760.

The previous prime is 225478811. The next prime is 225478859. The reversal of 225478857 is 758874522.

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

It is a cyclic number.

It is not a de Polignac number, because 225478857 - 2⁸ = 225478601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225478859) 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, 1295769 + ... + 1295942.

It is an arithmetic number, because the mean of its divisors is an integer number (38875680).

Almost surely, 2^225478857 is an apocalyptic number.

It is an amenable number.

225478857 is a deficient number, since it is larger than the sum of its proper divisors (85526583).

225478857 is a wasteful number, since it uses less digits than its factorization.

225478857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591743.

The product of its digits is 1254400, while the sum is 48.

The square root of 225478857 is about 15015.9534162836. The cubic root of 225478857 is about 608.6513760400.

The spelling of 225478857 in words is "two hundred twenty-five million, four hundred seventy-eight thousand, eight hundred fifty-seven".