25543061 has 8 divisors (see below), whose sum is σ = 27777240. Its totient is φ = 23390208.

The previous prime is 25543051. The next prime is 25543069. The reversal of 25543061 is 16034552.

It can be written as a sum of positive squares in 4 ways, for example, as 8444836 + 17098225 = 2906^2 + 4135^2 .

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 25543061 - 2¹⁸ = 25280917 is a prime.

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 25543061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25543069) 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, 19676 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (3472155).

Almost surely, 2^25543061 is an apocalyptic number.

It is an amenable number.

25543061 is a deficient number, since it is larger than the sum of its proper divisors (2234179).

25543061 is a wasteful number, since it uses less digits than its factorization.

25543061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40663.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25543061 is about 5054.0143450529. The cubic root of 25543061 is about 294.5038524117.

The spelling of 25543061 in words is "twenty-five million, five hundred forty-three thousand, sixty-one".