225537477 has 32 divisors (see below), whose sum is σ = 337236480. Its totient is φ = 132918720.

The previous prime is 225537461. The next prime is 225537497. The reversal of 225537477 is 774735522.

It is a happy number.

It is not a de Polignac number, because 225537477 - 2⁴ = 225537461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225537407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182899 + ... + 184127.

It is an arithmetic number, because the mean of its divisors is an integer number (10538640).

Almost surely, 2^225537477 is an apocalyptic number.

It is an amenable number.

225537477 is a deficient number, since it is larger than the sum of its proper divisors (111699003).

225537477 is a wasteful number, since it uses less digits than its factorization.

225537477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393.

The product of its digits is 411600, while the sum is 42.

The square root of 225537477 is about 15017.9052134444. The cubic root of 225537477 is about 608.7041172040.

The spelling of 225537477 in words is "two hundred twenty-five million, five hundred thirty-seven thousand, four hundred seventy-seven".