25782575 has 36 divisors (see below), whose sum is σ = 40075560. Its totient is φ = 16309440.

The previous prime is 25782571. The next prime is 25782577. The reversal of 25782575 is 57528752.

It is not a de Polignac number, because 25782575 - 2² = 25782571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25782571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15116 + ... + 16734.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^25782575 is an apocalyptic number.

25782575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25782575 is a deficient number, since it is larger than the sum of its proper divisors (14292985).

25782575 is a wasteful number, since it uses less digits than its factorization.

25782575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1644 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The square root of 25782575 is about 5077.6544782015. The cubic root of 25782575 is about 295.4214984017.

The spelling of 25782575 in words is "twenty-five million, seven hundred eighty-two thousand, five hundred seventy-five".