225057491 has 4 divisors (see below), whose sum is σ = 227906400. Its totient is φ = 222208584.

The previous prime is 225057473. The next prime is 225057517. The reversal of 225057491 is 194750522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225057491 - 2¹⁰ = 225056467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225057431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424336 + ... + 1424493.

It is an arithmetic number, because the mean of its divisors is an integer number (56976600).

Almost surely, 2^225057491 is an apocalyptic number.

225057491 is a deficient number, since it is larger than the sum of its proper divisors (2848909).

225057491 is an equidigital number, since it uses as much as digits as its factorization.

225057491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848908.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 225057491 is about 15001.9162442669. The cubic root of 225057491 is about 608.2719983865.

The spelling of 225057491 in words is "two hundred twenty-five million, fifty-seven thousand, four hundred ninety-one".