25520426 has 4 divisors (see below), whose sum is σ = 38280642. Its totient is φ = 12760212.

The previous prime is 25520423. The next prime is 25520437. The reversal of 25520426 is 62402552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24019801 + 1500625 = 4901^2 + 1225^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25520395 and 25520404.

It is not an unprimeable number, because it can be changed into a prime (25520423) 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 as a sum of consecutive naturals, namely, 6380105 + ... + 6380108.

Almost surely, 2^25520426 is an apocalyptic number.

25520426 is a deficient number, since it is larger than the sum of its proper divisors (12760216).

25520426 is a wasteful number, since it uses less digits than its factorization.

25520426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760215.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 25520426 is about 5051.7745397038. The cubic root of 25520426 is about 294.4168351102.

Adding to 25520426 its reverse (62402552), we get a palindrome (87922978).

The spelling of 25520426 in words is "twenty-five million, five hundred twenty thousand, four hundred twenty-six".