25567049 has 2 divisors, whose sum is σ = 25567050. Its totient is φ = 25567048.

The previous prime is 25566977. The next prime is 25567057. The reversal of 25567049 is 94076552.

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., 24078649 + 1488400 = 4907^2 + 1220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25567049 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25567079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12783524 + 12783525.

It is an arithmetic number, because the mean of its divisors is an integer number (12783525).

Almost surely, 2^25567049 is an apocalyptic number.

It is an amenable number.

25567049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25567049 is an equidigital number, since it uses as much as digits as its factorization.

25567049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 25567049 is about 5056.3869511737. The cubic root of 25567049 is about 294.5960150552.

The spelling of 25567049 in words is "twenty-five million, five hundred sixty-seven thousand, forty-nine".