25016897 has 2 divisors, whose sum is σ = 25016898. Its totient is φ = 25016896.

The previous prime is 25016839. The next prime is 25016903. The reversal of 25016897 is 79861052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 26896 = 4999^2 + 164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25016897 is a prime.

It is a Chen prime.

It is equal to p_1566947 and since 25016897 and 1566947 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25016897.

It is not a weakly prime, because it can be changed into another prime (25016807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12508448 + 12508449.

It is an arithmetic number, because the mean of its divisors is an integer number (12508449).

Almost surely, 2^25016897 is an apocalyptic number.

It is an amenable number.

25016897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25016897 is an equidigital number, since it uses as much as digits as its factorization.

25016897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 25016897 is about 5001.6894145878. The cubic root of 25016897 is about 292.4676351557.

The spelling of 25016897 in words is "twenty-five million, sixteen thousand, eight hundred ninety-seven".