25544131 has 2 divisors, whose sum is σ = 25544132. Its totient is φ = 25544130.

The previous prime is 25544111. The next prime is 25544147. The reversal of 25544131 is 13144552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25544131 - 2¹⁵ = 25511363 is a prime.

It is a super-2 number, since 2×25544131² = 1305005257090322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25544096 and 25544105.

It is not a weakly prime, because it can be changed into another prime (25544111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772065 + 12772066.

It is an arithmetic number, because the mean of its divisors is an integer number (12772066).

Almost surely, 2^25544131 is an apocalyptic number.

25544131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25544131 is an equidigital number, since it uses as much as digits as its factorization.

25544131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 25544131 is about 5054.1202003910. The cubic root of 25544131 is about 294.5079646142.

Adding to 25544131 its reverse (13144552), we get a palindrome (38688683).

The spelling of 25544131 in words is "twenty-five million, five hundred forty-four thousand, one hundred thirty-one".