25909475 has 12 divisors (see below), whose sum is σ = 32263560. Its totient is φ = 20640000.

The previous prime is 25909469. The next prime is 25909487. The reversal of 25909475 is 57490952.

It is not a de Polignac number, because 25909475 - 2¹⁰ = 25908451 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4211 + ... + 8339.

It is an arithmetic number, because the mean of its divisors is an integer number (2688630).

Almost surely, 2^25909475 is an apocalyptic number.

25909475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25909475 is a deficient number, since it is larger than the sum of its proper divisors (6354085).

25909475 is a wasteful number, since it uses less digits than its factorization.

25909475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 25909475 is about 5090.1350669702. The cubic root of 25909475 is about 295.9053865798.

It can be divided in two parts, 2590947 and 5, that added together give a palindrome (2590952).

The spelling of 25909475 in words is "twenty-five million, nine hundred nine thousand, four hundred seventy-five".