25275321 has 20 divisors (see below), whose sum is σ = 39401472. Its totient is φ = 16116408.

The previous prime is 25275307. The next prime is 25275347. The reversal of 25275321 is 12357252.

It is not a de Polignac number, because 25275321 - 2¹⁹ = 24751033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25275121) 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 19 ways as a sum of consecutive naturals, for example, 4921 + ... + 8646.

Almost surely, 2^25275321 is an apocalyptic number.

It is an amenable number.

25275321 is a deficient number, since it is larger than the sum of its proper divisors (14126151).

25275321 is a wasteful number, since it uses less digits than its factorization.

25275321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602 (or 13593 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 25275321 is about 5027.4567128917. The cubic root of 25275321 is about 293.4712487085.

The spelling of 25275321 in words is "twenty-five million, two hundred seventy-five thousand, three hundred twenty-one".