25257803 has 2 divisors, whose sum is σ = 25257804. Its totient is φ = 25257802.

The previous prime is 25257797. The next prime is 25257809. The reversal of 25257803 is 30875252.

It is a balanced prime because it is at equal distance from previous prime (25257797) and next prime (25257809).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25257803 is a prime.

It is a super-2 number, since 2×25257803² = 1275913224773618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25257803.

It is not a weakly prime, because it can be changed into another prime (25257809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628901 + 12628902.

It is an arithmetic number, because the mean of its divisors is an integer number (12628902).

Almost surely, 2^25257803 is an apocalyptic number.

25257803 is a deficient number, since it is larger than the sum of its proper divisors (1).

25257803 is an equidigital number, since it uses as much as digits as its factorization.

25257803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 25257803 is about 5025.7141781044. The cubic root of 25257803 is about 293.4034326555.

The spelling of 25257803 in words is "twenty-five million, two hundred fifty-seven thousand, eight hundred three".