25975049 has 2 divisors, whose sum is σ = 25975050. Its totient is φ = 25975048.

The previous prime is 25975009. The next prime is 25975051. The reversal of 25975049 is 94057952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 9653449 = 4040^2 + 3107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25975049 is a prime.

Together with 25975051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25974997 and 25975015.

It is not a weakly prime, because it can be changed into another prime (25975009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12987524 + 12987525.

It is an arithmetic number, because the mean of its divisors is an integer number (12987525).

Almost surely, 2^25975049 is an apocalyptic number.

It is an amenable number.

25975049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25975049 is an equidigital number, since it uses as much as digits as its factorization.

25975049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 25975049 is about 5096.5722794835. The cubic root of 25975049 is about 296.1548108189.

The spelling of 25975049 in words is "twenty-five million, nine hundred seventy-five thousand, forty-nine".