2550525281 has 4 divisors (see below), whose sum is σ = 2550633492. Its totient is φ = 2550417072.

The previous prime is 2550525277. The next prime is 2550525323. The reversal of 2550525281 is 1825250552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2083100881 + 467424400 = 45641^2 + 21620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550525281 - 2² = 2550525277 is a prime.

It is a super-2 number, since 2×2550525281² = 13010358418040257922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2550525221) 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, 2066 + ... + 71451.

It is an arithmetic number, because the mean of its divisors is an integer number (637658373).

Almost surely, 2^2550525281 is an apocalyptic number.

It is an amenable number.

2550525281 is a deficient number, since it is larger than the sum of its proper divisors (108211).

2550525281 is an equidigital number, since it uses as much as digits as its factorization.

2550525281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108210.

The product of its (nonzero) digits is 40000, while the sum is 35.

The square root of 2550525281 is about 50502.7254809085. The cubic root of 2550525281 is about 1366.2910104218.

The spelling of 2550525281 in words is "two billion, five hundred fifty million, five hundred twenty-five thousand, two hundred eighty-one".