225055221157 has 8 divisors (see below), whose sum is σ = 256624053336. Its totient is φ = 195523087872.

The previous prime is 225055221151. The next prime is 225055221163. The reversal of 225055221157 is 751122550522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (225055221151) and next prime (225055221163).

It can be written as a sum of positive squares in 4 ways, for example, as 81845199396 + 143210021761 = 286086^2 + 378431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225055221157 - 2⁷ = 225055221029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225055221151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509174488 + ... + 509174929.

It is an arithmetic number, because the mean of its divisors is an integer number (32078006667).

Almost surely, 2^225055221157 is an apocalyptic number.

It is an amenable number.

225055221157 is a deficient number, since it is larger than the sum of its proper divisors (31568832179).

225055221157 is a wasteful number, since it uses less digits than its factorization.

225055221157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018349447.

The product of its (nonzero) digits is 70000, while the sum is 37.

Adding to 225055221157 its reverse (751122550522), we get a palindrome (976177771679).

The spelling of 225055221157 in words is "two hundred twenty-five billion, fifty-five million, two hundred twenty-one thousand, one hundred fifty-seven".