2051225851 has 2 divisors, whose sum is σ = 2051225852. Its totient is φ = 2051225850.

The previous prime is 2051225821. The next prime is 2051225909. The reversal of 2051225851 is 1585221502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051225851 - 2⁵ = 2051225819 is a prime.

It is a super-4 number, since 4×2051225851⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (2051225821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025612925 + 1025612926.

It is an arithmetic number, because the mean of its divisors is an integer number (1025612926).

Almost surely, 2^2051225851 is an apocalyptic number.

2051225851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051225851 is an equidigital number, since it uses as much as digits as its factorization.

2051225851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 2051225851 is about 45290.4609272195. The cubic root of 2051225851 is about 1270.5872521259.

The spelling of 2051225851 in words is "two billion, fifty-one million, two hundred twenty-five thousand, eight hundred fifty-one".