25528603 has 2 divisors, whose sum is σ = 25528604. Its totient is φ = 25528602.

The previous prime is 25528579. The next prime is 25528619. The reversal of 25528603 is 30682552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25528603 - 2²¹ = 23431451 is a prime.

It is a super-2 number, since 2×25528603² = 1303419142263218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25528673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764301 + 12764302.

It is an arithmetic number, because the mean of its divisors is an integer number (12764302).

Almost surely, 2^25528603 is an apocalyptic number.

25528603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528603 is an equidigital number, since it uses as much as digits as its factorization.

25528603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 25528603 is about 5052.5837944561. The cubic root of 25528603 is about 294.4482764529.

The spelling of 25528603 in words is "twenty-five million, five hundred twenty-eight thousand, six hundred three".