25506575 has 12 divisors (see below), whose sum is σ = 31794840. Its totient is φ = 20297760.

The previous prime is 25506557. The next prime is 25506577. The reversal of 25506575 is 57560552.

It is not a de Polignac number, because 25506575 - 2¹² = 25502479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25506577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2336 + ... + 7514.

It is an arithmetic number, because the mean of its divisors is an integer number (2649570).

Almost surely, 2^25506575 is an apocalyptic number.

25506575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25506575 is a deficient number, since it is larger than the sum of its proper divisors (6288265).

25506575 is a wasteful number, since it uses less digits than its factorization.

25506575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386 (or 5381 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 25506575 is about 5050.4034492306. The cubic root of 25506575 is about 294.3635613708.

The spelling of 25506575 in words is "twenty-five million, five hundred six thousand, five hundred seventy-five".