25849897 has 2 divisors, whose sum is σ = 25849898. Its totient is φ = 25849896.

The previous prime is 25849871. The next prime is 25849903. The reversal of 25849897 is 79894852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25361296 + 488601 = 5036^2 + 699^2 .

It is a cyclic number.

It is not a de Polignac number, because 25849897 - 2¹¹ = 25847849 is a prime.

It is not a weakly prime, because it can be changed into another prime (25849097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12924948 + 12924949.

It is an arithmetic number, because the mean of its divisors is an integer number (12924949).

Almost surely, 2^25849897 is an apocalyptic number.

It is an amenable number.

25849897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25849897 is an equidigital number, since it uses as much as digits as its factorization.

25849897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The square root of 25849897 is about 5084.2793983022. The cubic root of 25849897 is about 295.6784042218.

The spelling of 25849897 in words is "twenty-five million, eight hundred forty-nine thousand, eight hundred ninety-seven".