25272817 has 2 divisors, whose sum is σ = 25272818. Its totient is φ = 25272816.

The previous prime is 25272809. The next prime is 25272839. The reversal of 25272817 is 71827252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13719616 + 11553201 = 3704^2 + 3399^2 .

It is a cyclic number.

It is not a de Polignac number, because 25272817 - 2³ = 25272809 is a prime.

It is equal to p_1581865 and since 25272817 and 1581865 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25272847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12636408 + 12636409.

It is an arithmetic number, because the mean of its divisors is an integer number (12636409).

Almost surely, 2^25272817 is an apocalyptic number.

It is an amenable number.

25272817 is a deficient number, since it is larger than the sum of its proper divisors (1).

25272817 is an equidigital number, since it uses as much as digits as its factorization.

25272817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 34.

The square root of 25272817 is about 5027.2076742462. The cubic root of 25272817 is about 293.4615570904.

The spelling of 25272817 in words is "twenty-five million, two hundred seventy-two thousand, eight hundred seventeen".