225377250281 has 4 divisors (see below), whose sum is σ = 229071959364. Its totient is φ = 221682541200.

The previous prime is 225377250277. The next prime is 225377250337. The reversal of 225377250281 is 182052773522.

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 2612129881 + 222765120400 = 51109^2 + 471980^2 .

It is a cyclic number.

It is not a de Polignac number, because 225377250281 - 2² = 225377250277 is a prime.

It is a super-2 number, since 2×225377250281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225377250211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847354450 + ... + 1847354571.

It is an arithmetic number, because the mean of its divisors is an integer number (57267989841).

Almost surely, 2^225377250281 is an apocalyptic number.

It is an amenable number.

225377250281 is a deficient number, since it is larger than the sum of its proper divisors (3694709083).

225377250281 is an equidigital number, since it uses as much as digits as its factorization.

225377250281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694709082.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 225377250281 in words is "two hundred twenty-five billion, three hundred seventy-seven million, two hundred fifty thousand, two hundred eighty-one".