25785272 has 8 divisors (see below), whose sum is σ = 48347400. Its totient is φ = 12892632.

The previous prime is 25785259. The next prime is 25785317. The reversal of 25785272 is 27258752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×25785272² = 1329760504227968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1611572 + ... + 1611587.

It is an arithmetic number, because the mean of its divisors is an integer number (6043425).

Almost surely, 2^25785272 is an apocalyptic number.

It is an amenable number.

25785272 is a deficient number, since it is larger than the sum of its proper divisors (22562128).

25785272 is a wasteful number, since it uses less digits than its factorization.

25785272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223165 (or 3223161 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 25785272 is about 5077.9200466333. The cubic root of 25785272 is about 295.4317989503.

The spelling of 25785272 in words is "twenty-five million, seven hundred eighty-five thousand, two hundred seventy-two".