25916434 has 8 divisors (see below), whose sum is σ = 40128768. Its totient is φ = 12540180.

The previous prime is 25916419. The next prime is 25916447. The reversal of 25916434 is 43461952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25916434.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 208942 + ... + 209065.

It is an arithmetic number, because the mean of its divisors is an integer number (5016096).

Almost surely, 2^25916434 is an apocalyptic number.

25916434 is a deficient number, since it is larger than the sum of its proper divisors (14212334).

25916434 is a wasteful number, since it uses less digits than its factorization.

25916434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418040.

The product of its digits is 25920, while the sum is 34.

The square root of 25916434 is about 5090.8185982217. The cubic root of 25916434 is about 295.9318765190.

Subtracting from 25916434 its sum of digits (34), we obtain a triangular number (25916400 = T₇₁₉₉).

It can be divided in two parts, 2591 and 6434, that added together give a square (9025 = 95²).

The spelling of 25916434 in words is "twenty-five million, nine hundred sixteen thousand, four hundred thirty-four".