25356523 has 2 divisors, whose sum is σ = 25356524. Its totient is φ = 25356522.

The previous prime is 25356509. The next prime is 25356553. The reversal of 25356523 is 32565352.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25356523 is a prime.

It is not a weakly prime, because it can be changed into another prime (25356553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12678261 + 12678262.

It is an arithmetic number, because the mean of its divisors is an integer number (12678262).

Almost surely, 2^25356523 is an apocalyptic number.

25356523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25356523 is an equidigital number, since it uses as much as digits as its factorization.

25356523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 31.

The square root of 25356523 is about 5035.5260896951. The cubic root of 25356523 is about 293.7851910156.

The spelling of 25356523 in words is "twenty-five million, three hundred fifty-six thousand, five hundred twenty-three".