25590081 has 16 divisors (see below), whose sum is σ = 37644480. Its totient is φ = 15333120.

The previous prime is 25590073. The next prime is 25590107. The reversal of 25590081 is 18009552.

It is not a de Polignac number, because 25590081 - 2³ = 25590073 is a prime.

It is a super-2 number, since 2×25590081² = 1309704491173122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25590001) 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 15 ways as a sum of consecutive naturals, for example, 1420 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (2352780).

Almost surely, 2^25590081 is an apocalyptic number.

It is an amenable number.

25590081 is a deficient number, since it is larger than the sum of its proper divisors (12054399).

25590081 is a wasteful number, since it uses less digits than its factorization.

25590081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 25590081 is about 5058.6639540495. The cubic root of 25590081 is about 294.6844504861.

The spelling of 25590081 in words is "twenty-five million, five hundred ninety thousand, eighty-one".