25059505 has 4 divisors (see below), whose sum is σ = 30071412. Its totient is φ = 20047600.

The previous prime is 25059493. The next prime is 25059523. The reversal of 25059505 is 50595052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3594816 + 21464689 = 1896^2 + 4633^2 .

It is not a de Polignac number, because 25059505 - 2²¹ = 22962353 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 2505946 + ... + 2505955.

It is an arithmetic number, because the mean of its divisors is an integer number (7517853).

Almost surely, 2^25059505 is an apocalyptic number.

It is an amenable number.

25059505 is a deficient number, since it is larger than the sum of its proper divisors (5011907).

25059505 is an equidigital number, since it uses as much as digits as its factorization.

25059505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011906.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 25059505 is about 5005.9469633627. The cubic root of 25059505 is about 292.6335815695.

The spelling of 25059505 in words is "twenty-five million, fifty-nine thousand, five hundred five".