25506375 has 32 divisors (see below), whose sum is σ = 44950464. Its totient is φ = 12800000.

The previous prime is 25506373. The next prime is 25506413. The reversal of 25506375 is 57360552.

It is not a de Polignac number, because 25506375 - 2¹ = 25506373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25506373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4375 + ... + 8375.

It is an arithmetic number, because the mean of its divisors is an integer number (1404702).

Almost surely, 2^25506375 is an apocalyptic number.

25506375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25506375 is a deficient number, since it is larger than the sum of its proper divisors (19444089).

25506375 is a wasteful number, since it uses less digits than its factorization.

25506375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 25506375 is about 5050.3836487934. The cubic root of 25506375 is about 294.3627919893.

The spelling of 25506375 in words is "twenty-five million, five hundred six thousand, three hundred seventy-five".