25573861 has 8 divisors (see below), whose sum is σ = 26786880. Its totient is φ = 24369312.

The previous prime is 25573859. The next prime is 25573897. The reversal of 25573861 is 16837552.

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 25573861 - 2¹ = 25573859 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 25573861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25573811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4545 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (3348360).

Almost surely, 2^25573861 is an apocalyptic number.

It is an amenable number.

25573861 is a deficient number, since it is larger than the sum of its proper divisors (1213019).

25573861 is a wasteful number, since it uses less digits than its factorization.

25573861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235.

The product of its digits is 50400, while the sum is 37.

The square root of 25573861 is about 5057.0605098219. The cubic root of 25573861 is about 294.6221764613.

The spelling of 25573861 in words is "twenty-five million, five hundred seventy-three thousand, eight hundred sixty-one".