25401611 has 2 divisors, whose sum is σ = 25401612. Its totient is φ = 25401610.

The previous prime is 25401589. The next prime is 25401631. The reversal of 25401611 is 11610452.

It is an a-pointer prime, because the next prime (25401631) can be obtained adding 25401611 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25401611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25401631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700805 + 12700806.

It is an arithmetic number, because the mean of its divisors is an integer number (12700806).

Almost surely, 2^25401611 is an apocalyptic number.

25401611 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401611 is an equidigital number, since it uses as much as digits as its factorization.

25401611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 25401611 is about 5040.0010912697. The cubic root of 25401611 is about 293.9592204380.

The spelling of 25401611 in words is "twenty-five million, four hundred one thousand, six hundred eleven".