225140477 has 2 divisors, whose sum is σ = 225140478. Its totient is φ = 225140476.

The previous prime is 225140473. The next prime is 225140479. The reversal of 225140477 is 774041522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190964761 + 34175716 = 13819^2 + 5846^2 .

It is a cyclic number.

It is not a de Polignac number, because 225140477 - 2² = 225140473 is a prime.

Together with 225140479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225140473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112570238 + 112570239.

It is an arithmetic number, because the mean of its divisors is an integer number (112570239).

Almost surely, 2^225140477 is an apocalyptic number.

It is an amenable number.

225140477 is a deficient number, since it is larger than the sum of its proper divisors (1).

225140477 is an equidigital number, since it uses as much as digits as its factorization.

225140477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 225140477 is about 15004.6818360137. The cubic root of 225140477 is about 608.3467524072.

Adding to 225140477 its reverse (774041522), we get a palindrome (999181999).

The spelling of 225140477 in words is "two hundred twenty-five million, one hundred forty thousand, four hundred seventy-seven".