25291003 has 2 divisors, whose sum is σ = 25291004. Its totient is φ = 25291002.

The previous prime is 25290953. The next prime is 25291039. The reversal of 25291003 is 30019252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25291003 - 2⁹ = 25290491 is a prime.

It is not a weakly prime, because it can be changed into another prime (25291073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12645501 + 12645502.

It is an arithmetic number, because the mean of its divisors is an integer number (12645502).

Almost surely, 2^25291003 is an apocalyptic number.

25291003 is a deficient number, since it is larger than the sum of its proper divisors (1).

25291003 is an equidigital number, since it uses as much as digits as its factorization.

25291003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 25291003 is about 5029.0161065560. The cubic root of 25291003 is about 293.5319306234.

The spelling of 25291003 in words is "twenty-five million, two hundred ninety-one thousand, three".