25694939 has 8 divisors (see below), whose sum is σ = 28084608. Its totient is φ = 23402880.

The previous prime is 25694881. The next prime is 25694953. The reversal of 25694939 is 93949652.

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

It is not a de Polignac number, because 25694939 - 2¹² = 25690843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25694893 and 25694902.

It is not an unprimeable number, because it can be changed into a prime (25694959) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23852 + ... + 24905.

It is an arithmetic number, because the mean of its divisors is an integer number (3510576).

Almost surely, 2^25694939 is an apocalyptic number.

25694939 is a deficient number, since it is larger than the sum of its proper divisors (2389669).

25694939 is a wasteful number, since it uses less digits than its factorization.

25694939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48805.

The product of its digits is 524880, while the sum is 47.

The square root of 25694939 is about 5069.0175576733. The cubic root of 25694939 is about 295.0864019633.

The spelling of 25694939 in words is "twenty-five million, six hundred ninety-four thousand, nine hundred thirty-nine".