25406189 has 2 divisors, whose sum is σ = 25406190. Its totient is φ = 25406188.

The previous prime is 25406159. The next prime is 25406219. The reversal of 25406189 is 98160452.

It is a balanced prime because it is at equal distance from previous prime (25406159) and next prime (25406219).

It can be written as a sum of positive squares in only one way, i.e., 23843689 + 1562500 = 4883^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 25406189 - 2¹² = 25402093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25406119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12703094 + 12703095.

It is an arithmetic number, because the mean of its divisors is an integer number (12703095).

Almost surely, 2^25406189 is an apocalyptic number.

It is an amenable number.

25406189 is a deficient number, since it is larger than the sum of its proper divisors (1).

25406189 is an equidigital number, since it uses as much as digits as its factorization.

25406189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 25406189 is about 5040.4552373769. The cubic root of 25406189 is about 293.9768789567.

The spelling of 25406189 in words is "twenty-five million, four hundred six thousand, one hundred eighty-nine".