25272631 has 4 divisors (see below), whose sum is σ = 25504600. Its totient is φ = 25040664.

The previous prime is 25272629. The next prime is 25272697. The reversal of 25272631 is 13627252.

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

It is a cyclic number.

It is not a de Polignac number, because 25272631 - 2¹ = 25272629 is a prime.

It is a super-3 number, since 3×25272631³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25272631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25272431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 115821 + ... + 116038.

It is an arithmetic number, because the mean of its divisors is an integer number (6376150).

Almost surely, 2^25272631 is an apocalyptic number.

25272631 is a deficient number, since it is larger than the sum of its proper divisors (231969).

25272631 is a wasteful number, since it uses less digits than its factorization.

25272631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231968.

The product of its digits is 5040, while the sum is 28.

The square root of 25272631 is about 5027.1891748770. The cubic root of 25272631 is about 293.4608371603.

Adding to 25272631 its reverse (13627252), we get a palindrome (38899883).

The spelling of 25272631 in words is "twenty-five million, two hundred seventy-two thousand, six hundred thirty-one".