25829505 has 48 divisors (see below), whose sum is σ = 49008960. Its totient is φ = 12507264.

The previous prime is 25829473. The next prime is 25829519. The reversal of 25829505 is 50592852.

It is not a de Polignac number, because 25829505 - 2⁵ = 25829473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25829505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38866 + ... + 39524.

It is an arithmetic number, because the mean of its divisors is an integer number (1021020).

Almost surely, 2^25829505 is an apocalyptic number.

It is an amenable number.

25829505 is a deficient number, since it is larger than the sum of its proper divisors (23179455).

25829505 is a wasteful number, since it uses less digits than its factorization.

25829505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 25829505 is about 5082.2736053857. The cubic root of 25829505 is about 295.6006339546.

The spelling of 25829505 in words is "twenty-five million, eight hundred twenty-nine thousand, five hundred five".