25603007 has 2 divisors, whose sum is σ = 25603008. Its totient is φ = 25603006.

The previous prime is 25602959. The next prime is 25603009. The reversal of 25603007 is 70030652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25603007 - 2⁸ = 25602751 is a prime.

Together with 25603009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25603009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801503 + 12801504.

It is an arithmetic number, because the mean of its divisors is an integer number (12801504).

Almost surely, 2^25603007 is an apocalyptic number.

25603007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25603007 is an equidigital number, since it uses as much as digits as its factorization.

25603007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 25603007 is about 5059.9414028228. The cubic root of 25603007 is about 294.7340589006.

Adding to 25603007 its reverse (70030652), we get a palindrome (95633659).

The spelling of 25603007 in words is "twenty-five million, six hundred three thousand, seven".