25534603 has 2 divisors, whose sum is σ = 25534604. Its totient is φ = 25534602.

The previous prime is 25534589. The next prime is 25534631. The reversal of 25534603 is 30643552.

It is an a-pointer prime, because the next prime (25534631) can be obtained adding 25534603 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25534603 is a prime.

It is not a weakly prime, because it can be changed into another prime (25534693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12767301 + 12767302.

It is an arithmetic number, because the mean of its divisors is an integer number (12767302).

Almost surely, 2^25534603 is an apocalyptic number.

25534603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25534603 is an equidigital number, since it uses as much as digits as its factorization.

25534603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 25534603 is about 5053.1775151878. The cubic root of 25534603 is about 294.4713427532.

The spelling of 25534603 in words is "twenty-five million, five hundred thirty-four thousand, six hundred three".