25616438 has 4 divisors (see below), whose sum is σ = 38424660. Its totient is φ = 12808218.

The previous prime is 25616419. The next prime is 25616471. The reversal of 25616438 is 83461652.

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

It is a junction number, because it is equal to n+sod(n) for n = 25616398 and 25616407.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6404108 + ... + 6404111.

It is an arithmetic number, because the mean of its divisors is an integer number (9606165).

Almost surely, 2^25616438 is an apocalyptic number.

25616438 is a deficient number, since it is larger than the sum of its proper divisors (12808222).

25616438 is a wasteful number, since it uses less digits than its factorization.

25616438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808221.

The product of its digits is 34560, while the sum is 35.

The square root of 25616438 is about 5061.2684180944. The cubic root of 25616438 is about 294.7855877587.

The spelling of 25616438 in words is "twenty-five million, six hundred sixteen thousand, four hundred thirty-eight".