25475161 has 2 divisors, whose sum is σ = 25475162. Its totient is φ = 25475160.

The previous prime is 25475159. The next prime is 25475171. The reversal of 25475161 is 16157452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17065161 + 8410000 = 4131^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 25475161 - 2¹ = 25475159 is a prime.

Together with 25475159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25475111) 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, 12737580 + 12737581.

It is an arithmetic number, because the mean of its divisors is an integer number (12737581).

Almost surely, 2^25475161 is an apocalyptic number.

It is an amenable number.

25475161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25475161 is an equidigital number, since it uses as much as digits as its factorization.

25475161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 25475161 is about 5047.2924424883. The cubic root of 25475161 is about 294.2426652779.

The spelling of 25475161 in words is "twenty-five million, four hundred seventy-five thousand, one hundred sixty-one".