225765762557 has 4 divisors (see below), whose sum is σ = 230025493980. Its totient is φ = 221506031136.

The previous prime is 225765762527. The next prime is 225765762559. The reversal of 225765762557 is 755267567522.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 123730876516 + 102034886041 = 351754^2 + 319429^2 .

It is a cyclic number.

It is not a de Polignac number, because 225765762557 - 2⁶ = 225765762493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225765762496 and 225765762505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225765762559) 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, 2129865632 + ... + 2129865737.

It is an arithmetic number, because the mean of its divisors is an integer number (57506373495).

Almost surely, 2^225765762557 is an apocalyptic number.

It is an amenable number.

225765762557 is a deficient number, since it is larger than the sum of its proper divisors (4259731423).

225765762557 is an equidigital number, since it uses as much as digits as its factorization.

225765762557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259731422.

The product of its digits is 61740000, while the sum is 59.

The spelling of 225765762557 in words is "two hundred twenty-five billion, seven hundred sixty-five million, seven hundred sixty-two thousand, five hundred fifty-seven".