25603873 has 2 divisors, whose sum is σ = 25603874. Its totient is φ = 25603872.

The previous prime is 25603847. The next prime is 25603891. The reversal of 25603873 is 37830652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 5326864 = 4503^2 + 2308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25603873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25603813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801936 + 12801937.

It is an arithmetic number, because the mean of its divisors is an integer number (12801937).

Almost surely, 2^25603873 is an apocalyptic number.

It is an amenable number.

25603873 is a deficient number, since it is larger than the sum of its proper divisors (1).

25603873 is an equidigital number, since it uses as much as digits as its factorization.

25603873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25603873 is about 5060.0269762127. The cubic root of 25603873 is about 294.7373819063.

The spelling of 25603873 in words is "twenty-five million, six hundred three thousand, eight hundred seventy-three".