25513426 has 4 divisors (see below), whose sum is σ = 38270142. Its totient is φ = 12756712.

The previous prime is 25513393. The next prime is 25513441. The reversal of 25513426 is 62431552.

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., 25492401 + 21025 = 5049^2 + 145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25513394 and 25513403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378355 + ... + 6378358.

Almost surely, 2^25513426 is an apocalyptic number.

25513426 is a deficient number, since it is larger than the sum of its proper divisors (12756716).

25513426 is a wasteful number, since it uses less digits than its factorization.

25513426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12756715.

The product of its digits is 7200, while the sum is 28.

The square root of 25513426 is about 5051.0816663364. The cubic root of 25513426 is about 294.3899141083.

Adding to 25513426 its reverse (62431552), we get a palindrome (87944978).

The spelling of 25513426 in words is "twenty-five million, five hundred thirteen thousand, four hundred twenty-six".