25364431 has 4 divisors (see below), whose sum is σ = 25377264. Its totient is φ = 25351600.

The previous prime is 25364429. The next prime is 25364477. The reversal of 25364431 is 13446352.

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 25364431 - 2¹ = 25364429 is a prime.

It is a super-2 number, since 2×25364431² = 1286708719907522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25364431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25364401) 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, 2755 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (6344316).

Almost surely, 2^25364431 is an apocalyptic number.

25364431 is a deficient number, since it is larger than the sum of its proper divisors (12833).

25364431 is a wasteful number, since it uses less digits than its factorization.

25364431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832.

The product of its digits is 8640, while the sum is 28.

The square root of 25364431 is about 5036.3112493173. The cubic root of 25364431 is about 293.8157290066.

The spelling of 25364431 in words is "twenty-five million, three hundred sixty-four thousand, four hundred thirty-one".