25775138 has 8 divisors (see below), whose sum is σ = 38690460. Its totient is φ = 12878320.

The previous prime is 25775117. The next prime is 25775143. The reversal of 25775138 is 83157752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22061809 + 3713329 = 4697^2 + 1927^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353 + ... + 7188.

Almost surely, 2^25775138 is an apocalyptic number.

25775138 is a deficient number, since it is larger than the sum of its proper divisors (12915322).

25775138 is a wasteful number, since it uses less digits than its factorization.

25775138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9252.

The product of its digits is 58800, while the sum is 38.

The square root of 25775138 is about 5076.9220990675. The cubic root of 25775138 is about 295.3930908310.

The spelling of 25775138 in words is "twenty-five million, seven hundred seventy-five thousand, one hundred thirty-eight".