25534431 has 24 divisors (see below), whose sum is σ = 40696656. Its totient is φ = 15327360.

The previous prime is 25534427. The next prime is 25534441. The reversal of 25534431 is 13443552.

It is not a de Polignac number, because 25534431 - 2² = 25534427 is a prime.

It is a super-2 number, since 2×25534431² = 1304014332987522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25534395 and 25534404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25534441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2136 + ... + 7458.

It is an arithmetic number, because the mean of its divisors is an integer number (1695694).

Almost surely, 2^25534431 is an apocalyptic number.

25534431 is a deficient number, since it is larger than the sum of its proper divisors (15162225).

25534431 is a wasteful number, since it uses less digits than its factorization.

25534431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5383 (or 5380 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 25534431 is about 5053.1604961648. The cubic root of 25534431 is about 294.4706815696.

Adding to 25534431 its reverse (13443552), we get a palindrome (38977983).

The spelling of 25534431 in words is "twenty-five million, five hundred thirty-four thousand, four hundred thirty-one".