25555426 has 16 divisors (see below), whose sum is σ = 41711544. Its totient is φ = 11672064.

The previous prime is 25555393. The next prime is 25555427. The reversal of 25555426 is 62455552.

It can be written as a sum of positive squares in 4 ways, for example, as 20693401 + 4862025 = 4549^2 + 2205^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25555391 and 25555400.

It is not an unprimeable number, because it can be changed into a prime (25555427) 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 7 ways as a sum of consecutive naturals, for example, 2545 + ... + 7588.

Almost surely, 2^25555426 is an apocalyptic number.

25555426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25555426 is a deficient number, since it is larger than the sum of its proper divisors (16156118).

25555426 is a wasteful number, since it uses less digits than its factorization.

25555426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245.

The product of its digits is 60000, while the sum is 34.

The square root of 25555426 is about 5055.2374820576. The cubic root of 25555426 is about 294.5513663293.

The spelling of 25555426 in words is "twenty-five million, five hundred fifty-five thousand, four hundred twenty-six".