25321051 has 4 divisors (see below), whose sum is σ = 28938352. Its totient is φ = 21703752.

The previous prime is 25321013. The next prime is 25321099. The reversal of 25321051 is 15012352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25321051 - 2⁷ = 25320923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25321151) 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, 1808640 + ... + 1808653.

It is an arithmetic number, because the mean of its divisors is an integer number (7234588).

Almost surely, 2^25321051 is an apocalyptic number.

25321051 is a deficient number, since it is larger than the sum of its proper divisors (3617301).

25321051 is an equidigital number, since it uses as much as digits as its factorization.

25321051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617300.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25321051 is about 5032.0026828292. The cubic root of 25321051 is about 293.6481321141.

The spelling of 25321051 in words is "twenty-five million, three hundred twenty-one thousand, fifty-one".