16525403 has 2 divisors, whose sum is σ = 16525404. Its totient is φ = 16525402.

The previous prime is 16525391. The next prime is 16525409. The reversal of 16525403 is 30452561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16525403 - 2⁸ = 16525147 is a prime.

It is not a weakly prime, because it can be changed into another prime (16525409) 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, 8262701 + 8262702.

It is an arithmetic number, because the mean of its divisors is an integer number (8262702).

Almost surely, 2^16525403 is an apocalyptic number.

16525403 is a deficient number, since it is larger than the sum of its proper divisors (1).

16525403 is an equidigital number, since it uses as much as digits as its factorization.

16525403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 16525403 is about 4065.1448928667. The cubic root of 16525403 is about 254.7127510036.

Adding to 16525403 its reverse (30452561), we get a palindrome (46977964).

The spelling of 16525403 in words is "sixteen million, five hundred twenty-five thousand, four hundred three".