4001425205251 has 2 divisors, whose sum is σ = 4001425205252. Its totient is φ = 4001425205250.

The previous prime is 4001425205243. The next prime is 4001425205311. The reversal of 4001425205251 is 1525025241004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4001425205251 - 2³ = 4001425205243 is a prime.

It is a super-2 number, since 2×4001425205251² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4001425205651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000712602625 + 2000712602626.

It is an arithmetic number, because the mean of its divisors is an integer number (2000712602626).

Almost surely, 2^{4001425205251} is an apocalyptic number.

4001425205251 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001425205251 is an equidigital number, since it uses as much as digits as its factorization.

4001425205251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 4001425205251 in words is "four trillion, one billion, four hundred twenty-five million, two hundred five thousand, two hundred fifty-one".