25894949 has 2 divisors, whose sum is σ = 25894950. Its totient is φ = 25894948.

The previous prime is 25894879. The next prime is 25894969. The reversal of 25894949 is 94949852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 6666724 = 4385^2 + 2582^2 .

It is a cyclic number.

It is not a de Polignac number, because 25894949 - 2²⁰ = 24846373 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25894897 and 25894906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25894969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12947474 + 12947475.

It is an arithmetic number, because the mean of its divisors is an integer number (12947475).

Almost surely, 2^25894949 is an apocalyptic number.

It is an amenable number.

25894949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25894949 is an equidigital number, since it uses as much as digits as its factorization.

25894949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 25894949 is about 5088.7079892641. The cubic root of 25894949 is about 295.8500770174.

The spelling of 25894949 in words is "twenty-five million, eight hundred ninety-four thousand, nine hundred forty-nine".