25250400001 has 2 divisors, whose sum is σ = 25250400002. Its totient is φ = 25250400000.

The previous prime is 25250399983. The next prime is 25250400041. The reversal of 25250400001 is 10000405252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16868814400 + 8381585601 = 129880^2 + 91551^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250400001 - 2⁷ = 25250399873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25250400041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625200000 + 12625200001.

It is an arithmetic number, because the mean of its divisors is an integer number (12625200001).

Almost surely, 2^25250400001 is an apocalyptic number.

It is an amenable number.

25250400001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250400001 is an equidigital number, since it uses as much as digits as its factorization.

25250400001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 19.

Adding to 25250400001 its reverse (10000405252), we get a palindrome (35250805253).

The spelling of 25250400001 in words is "twenty-five billion, two hundred fifty million, four hundred thousand, one".