25513434 has 32 divisors (see below), whose sum is σ = 58529280. Its totient is φ = 8229600.

The previous prime is 25513393. The next prime is 25513441. The reversal of 25513434 is 43431552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25513398 and 25513407.

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 15 ways as a sum of consecutive naturals, for example, 5947 + ... + 9294.

It is an arithmetic number, because the mean of its divisors is an integer number (1829040).

Almost surely, 2^25513434 is an apocalyptic number.

25513434 is an abundant number, since it is smaller than the sum of its proper divisors (33015846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25513434 is a wasteful number, since it uses less digits than its factorization.

25513434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15283 (or 15277 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 25513434 is about 5051.0824582460. The cubic root of 25513434 is about 294.3899448780.

Adding to 25513434 its reverse (43431552), we get a palindrome (68944986).

It can be divided in two parts, 255 and 13434, that added together give a square (13689 = 117²).

The spelling of 25513434 in words is "twenty-five million, five hundred thirteen thousand, four hundred thirty-four".