25525663 has 2 divisors, whose sum is σ = 25525664. Its totient is φ = 25525662.

The previous prime is 25525649. The next prime is 25525673. The reversal of 25525663 is 36652552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25525663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25525613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762831 + 12762832.

It is an arithmetic number, because the mean of its divisors is an integer number (12762832).

Almost surely, 2^25525663 is an apocalyptic number.

25525663 is a deficient number, since it is larger than the sum of its proper divisors (1).

25525663 is an equidigital number, since it uses as much as digits as its factorization.

25525663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 34.

The square root of 25525663 is about 5052.2928458275. The cubic root of 25525663 is about 294.4369726464.

The spelling of 25525663 in words is "twenty-five million, five hundred twenty-five thousand, six hundred sixty-three".