25606091 has 12 divisors (see below), whose sum is σ = 30888432. Its totient is φ = 20790864.

The previous prime is 25606069. The next prime is 25606111. The reversal of 25606091 is 19060652.

It is not a de Polignac number, because 25606091 - 2¹⁰ = 25605067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25606051) 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, 2540 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (2574036).

Almost surely, 2^25606091 is an apocalyptic number.

25606091 is a deficient number, since it is larger than the sum of its proper divisors (5282341).

25606091 is a wasteful number, since it uses less digits than its factorization.

25606091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178 (or 10159 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 25606091 is about 5060.2461402584. The cubic root of 25606091 is about 294.7458924500.

The spelling of 25606091 in words is "twenty-five million, six hundred six thousand, ninety-one".