25559453 has 2 divisors, whose sum is σ = 25559454. Its totient is φ = 25559452.

The previous prime is 25559447. The next prime is 25559467. The reversal of 25559453 is 35495552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14417209 + 11142244 = 3797^2 + 3338^2 .

It is a cyclic number.

It is not a de Polignac number, because 25559453 - 2⁴ = 25559437 is a prime.

It is a Chen prime.

It is equal to p_1598663 and since 25559453 and 1598663 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25559753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12779726 + 12779727.

It is an arithmetic number, because the mean of its divisors is an integer number (12779727).

Almost surely, 2^25559453 is an apocalyptic number.

It is an amenable number.

25559453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25559453 is an equidigital number, since it uses as much as digits as its factorization.

25559453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135000, while the sum is 38.

The square root of 25559453 is about 5055.6357661525. The cubic root of 25559453 is about 294.5668372258.

The spelling of 25559453 in words is "twenty-five million, five hundred fifty-nine thousand, four hundred fifty-three".