25817153 has 2 divisors, whose sum is σ = 25817154. Its totient is φ = 25817152.

The previous prime is 25817149. The next prime is 25817159. The reversal of 25817153 is 35171852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 183184 = 5063^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 25817153 - 2² = 25817149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25817159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908576 + 12908577.

It is an arithmetic number, because the mean of its divisors is an integer number (12908577).

Almost surely, 2^25817153 is an apocalyptic number.

It is an amenable number.

25817153 is a deficient number, since it is larger than the sum of its proper divisors (1).

25817153 is an equidigital number, since it uses as much as digits as its factorization.

25817153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 32.

The square root of 25817153 is about 5081.0582559148. The cubic root of 25817153 is about 295.5535064389.

The spelling of 25817153 in words is "twenty-five million, eight hundred seventeen thousand, one hundred fifty-three".