25068821 has 4 divisors (see below), whose sum is σ = 25100544. Its totient is φ = 25037100.

The previous prime is 25068811. The next prime is 25068839. The reversal of 25068821 is 12886052.

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 25068821 - 2¹⁴ = 25052437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25068811) 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, 14645 + ... + 16266.

It is an arithmetic number, because the mean of its divisors is an integer number (6275136).

Almost surely, 2^25068821 is an apocalyptic number.

It is an amenable number.

25068821 is a deficient number, since it is larger than the sum of its proper divisors (31723).

25068821 is an equidigital number, since it uses as much as digits as its factorization.

25068821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31722.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 25068821 is about 5006.8773701779. The cubic root of 25068821 is about 292.6698397570.

The spelling of 25068821 in words is "twenty-five million, sixty-eight thousand, eight hundred twenty-one".