25513436 has 12 divisors (see below), whose sum is σ = 48083112. Its totient is φ = 11775408.

The previous prime is 25513393. The next prime is 25513441. The reversal of 25513436 is 63431552.

It is a junction number, because it is equal to n+sod(n) for n = 25513399 and 25513408.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 245270 + ... + 245373.

It is an arithmetic number, because the mean of its divisors is an integer number (4006926).

Almost surely, 2^25513436 is an apocalyptic number.

25513436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25513436 is a deficient number, since it is larger than the sum of its proper divisors (22569676).

25513436 is a wasteful number, since it uses less digits than its factorization.

25513436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490660 (or 490658 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 25513436 is about 5051.0826562233. The cubic root of 25513436 is about 294.3899525704.

Adding to 25513436 its reverse (63431552), we get a palindrome (88944988).

The spelling of 25513436 in words is "twenty-five million, five hundred thirteen thousand, four hundred thirty-six".