25305001 has 2 divisors, whose sum is σ = 25305002. Its totient is φ = 25305000.

The previous prime is 25304999. The next prime is 25305013. The reversal of 25305001 is 10050352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 11909401 = 3660^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 25305001 - 2¹ = 25304999 is a prime.

It is a super-2 number, since 2×25305001² = 1280686151220002, which contains 22 as substring.

Together with 25304999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25305101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652500 + 12652501.

It is an arithmetic number, because the mean of its divisors is an integer number (12652501).

Almost surely, 2^25305001 is an apocalyptic number.

It is an amenable number.

25305001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305001 is an equidigital number, since it uses as much as digits as its factorization.

25305001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 25305001 is about 5030.4076375578. The cubic root of 25305001 is about 293.5860750708.

Adding to 25305001 its reverse (10050352), we get a palindrome (35355353).

The spelling of 25305001 in words is "twenty-five million, three hundred five thousand, one".