25220785 has 8 divisors (see below), whose sum is σ = 30292416. Its totient is φ = 20158320.

The previous prime is 25220777. The next prime is 25220813. The reversal of 25220785 is 58702252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25220785 - 2³ = 25220777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 7870 + ... + 10600.

It is an arithmetic number, because the mean of its divisors is an integer number (3786552).

Almost surely, 2^25220785 is an apocalyptic number.

It is an amenable number.

25220785 is a deficient number, since it is larger than the sum of its proper divisors (5071631).

25220785 is a wasteful number, since it uses less digits than its factorization.

25220785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25220785 is about 5022.0299680508. The cubic root of 25220785 is about 293.2600245811.

The spelling of 25220785 in words is "twenty-five million, two hundred twenty thousand, seven hundred eighty-five".