25451025001 has 2 divisors, whose sum is σ = 25451025002. Its totient is φ = 25451025000.

The previous prime is 25451024999. The next prime is 25451025071. The reversal of 25451025001 is 10052015452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17454373225 + 7996651776 = 132115^2 + 89424^2 .

It is a cyclic number.

It is not a de Polignac number, because 25451025001 - 2¹ = 25451024999 is a prime.

Together with 25451024999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25451025071) 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 as a sum of consecutive naturals, namely, 12725512500 + 12725512501.

It is an arithmetic number, because the mean of its divisors is an integer number (12725512501).

Almost surely, 2^25451025001 is an apocalyptic number.

It is an amenable number.

25451025001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25451025001 is an equidigital number, since it uses as much as digits as its factorization.

25451025001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 25451025001 in words is "twenty-five billion, four hundred fifty-one million, twenty-five thousand, one".