225802557 has 6 divisors (see below), whose sum is σ = 326159262. Its totient is φ = 150535032.

The previous prime is 225802519. The next prime is 225802559. The reversal of 225802557 is 755208522.

225802557 is a `hidden beast` number, since 2 + 2 + 580 + 25 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 225180036 + 622521 = 15006^2 + 789^2 .

It is not a de Polignac number, because 225802557 - 2¹⁰ = 225801533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225802559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12544578 + ... + 12544595.

It is an arithmetic number, because the mean of its divisors is an integer number (54359877).

Almost surely, 2^225802557 is an apocalyptic number.

It is an amenable number.

225802557 is a deficient number, since it is larger than the sum of its proper divisors (100356705).

225802557 is a wasteful number, since it uses less digits than its factorization.

225802557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25089179 (or 25089176 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 225802557 is about 15026.7280869789. The cubic root of 225802557 is about 608.9424990401.

The spelling of 225802557 in words is "two hundred twenty-five million, eight hundred two thousand, five hundred fifty-seven".