25516426 has 16 divisors (see below), whose sum is σ = 41998824. Its totient is φ = 11553984.

The previous prime is 25516423. The next prime is 25516427. The reversal of 25516426 is 62461552.

It can be written as a sum of positive squares in 4 ways, for example, as 17682025 + 7834401 = 4205^2 + 2799^2 .

It is not an unprimeable number, because it can be changed into a prime (25516423) 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 7 ways as a sum of consecutive naturals, for example, 7881 + ... + 10636.

Almost surely, 2^25516426 is an apocalyptic number.

25516426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25516426 is a deficient number, since it is larger than the sum of its proper divisors (16482398).

25516426 is a wasteful number, since it uses less digits than its factorization.

25516426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18585.

The product of its digits is 14400, while the sum is 31.

The square root of 25516426 is about 5051.3786237026. The cubic root of 25516426 is about 294.4014522834.

Adding to 25516426 its reverse (62461552), we get a palindrome (87977978).

The spelling of 25516426 in words is "twenty-five million, five hundred sixteen thousand, four hundred twenty-six".