25901081 has 8 divisors (see below), whose sum is σ = 27513504. Its totient is φ = 24298560.

The previous prime is 25901021. The next prime is 25901087. The reversal of 25901081 is 18010952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25901081 - 2⁶ = 25901017 is a prime.

It is a super-2 number, since 2×25901081² = 1341731993937122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25901081.

It is not an unprimeable number, because it can be changed into a prime (25901087) 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 7 ways as a sum of consecutive naturals, for example, 3326 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (3439188).

Almost surely, 2^25901081 is an apocalyptic number.

It is an amenable number.

25901081 is a deficient number, since it is larger than the sum of its proper divisors (1612423).

25901081 is a wasteful number, since it uses less digits than its factorization.

25901081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 25901081 is about 5089.3104641002. The cubic root of 25901081 is about 295.8734278968.

The spelling of 25901081 in words is "twenty-five million, nine hundred one thousand, eighty-one".