2551325281 has 2 divisors, whose sum is σ = 2551325282. Its totient is φ = 2551325280.

The previous prime is 2551325267. The next prime is 2551325323. The reversal of 2551325281 is 1825231552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2152124881 + 399200400 = 46391^2 + 19980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551325281 - 2¹¹ = 2551323233 is a prime.

It is a super-2 number, since 2×2551325281² = 13018521378939457922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2551325221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275662640 + 1275662641.

It is an arithmetic number, because the mean of its divisors is an integer number (1275662641).

Almost surely, 2^2551325281 is an apocalyptic number.

It is an amenable number.

2551325281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551325281 is an equidigital number, since it uses as much as digits as its factorization.

2551325281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 34.

The square root of 2551325281 is about 50510.6452245465. The cubic root of 2551325281 is about 1366.4338461683.

The spelling of 2551325281 in words is "two billion, five hundred fifty-one million, three hundred twenty-five thousand, two hundred eighty-one".