25194938 has 4 divisors (see below), whose sum is σ = 37792410. Its totient is φ = 12597468.

The previous prime is 25194919. The next prime is 25194941. The reversal of 25194938 is 83949152.

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., 25170289 + 24649 = 5017^2 + 157^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25194895 and 25194904.

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, 6298733 + ... + 6298736.

Almost surely, 2^25194938 is an apocalyptic number.

25194938 is a deficient number, since it is larger than the sum of its proper divisors (12597472).

25194938 is a wasteful number, since it uses less digits than its factorization.

25194938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12597471.

The product of its digits is 77760, while the sum is 41.

The square root of 25194938 is about 5019.4559466141. The cubic root of 25194938 is about 293.1598098482.

The spelling of 25194938 in words is "twenty-five million, one hundred ninety-four thousand, nine hundred thirty-eight".