25352861 has 4 divisors (see below), whose sum is σ = 25426272. Its totient is φ = 25279452.

The previous prime is 25352839. The next prime is 25352879. The reversal of 25352861 is 16825352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25352861 - 2¹⁸ = 25090717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25352891) 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 3 ways as a sum of consecutive naturals, for example, 36185 + ... + 36878.

It is an arithmetic number, because the mean of its divisors is an integer number (6356568).

Almost surely, 2^25352861 is an apocalyptic number.

It is an amenable number.

25352861 is a deficient number, since it is larger than the sum of its proper divisors (73411).

25352861 is an equidigital number, since it uses as much as digits as its factorization.

25352861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73410.

The product of its digits is 14400, while the sum is 32.

The square root of 25352861 is about 5035.1624601397. The cubic root of 25352861 is about 293.7710474733.

The spelling of 25352861 in words is "twenty-five million, three hundred fifty-two thousand, eight hundred sixty-one".