25936949 has 2 divisors, whose sum is σ = 25936950. Its totient is φ = 25936948.

The previous prime is 25936913. The next prime is 25936961. The reversal of 25936949 is 94963952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15856324 + 10080625 = 3982^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 25936949 - 2¹⁶ = 25871413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25936909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12968474 + 12968475.

It is an arithmetic number, because the mean of its divisors is an integer number (12968475).

Almost surely, 2^25936949 is an apocalyptic number.

It is an amenable number.

25936949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25936949 is an equidigital number, since it uses as much as digits as its factorization.

25936949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 47.

The square root of 25936949 is about 5092.8331015261. The cubic root of 25936949 is about 296.0099407728.

The spelling of 25936949 in words is "twenty-five million, nine hundred thirty-six thousand, nine hundred forty-nine".