25705403 has 2 divisors, whose sum is σ = 25705404. Its totient is φ = 25705402.

The previous prime is 25705391. The next prime is 25705429. The reversal of 25705403 is 30450752.

It is an a-pointer prime, because the next prime (25705429) can be obtained adding 25705403 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25705403 - 2⁴ = 25705387 is a prime.

It is not a weakly prime, because it can be changed into another prime (25705103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852701 + 12852702.

It is an arithmetic number, because the mean of its divisors is an integer number (12852702).

Almost surely, 2^25705403 is an apocalyptic number.

25705403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25705403 is an equidigital number, since it uses as much as digits as its factorization.

25705403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 25705403 is about 5070.0496052800. The cubic root of 25705403 is about 295.1264534957.

The spelling of 25705403 in words is "twenty-five million, seven hundred five thousand, four hundred three".