25545291 has 16 divisors (see below), whose sum is σ = 36393600. Its totient is φ = 15890688.

The previous prime is 25545283. The next prime is 25545323. The reversal of 25545291 is 19254552.

It is not a de Polignac number, because 25545291 - 2³ = 25545283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25545251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (2274600).

Almost surely, 2^25545291 is an apocalyptic number.

25545291 is a deficient number, since it is larger than the sum of its proper divisors (10848309).

25545291 is a wasteful number, since it uses less digits than its factorization.

25545291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778.

The product of its digits is 18000, while the sum is 33.

The square root of 25545291 is about 5054.2349569445. The cubic root of 25545291 is about 294.5124225733.

The spelling of 25545291 in words is "twenty-five million, five hundred forty-five thousand, two hundred ninety-one".