25884090938 has 4 divisors (see below), whose sum is σ = 38826136410. Its totient is φ = 12942045468.

The previous prime is 25884090937. The next prime is 25884091007. The reversal of 25884090938 is 83909048852.

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., 25623365329 + 260725609 = 160073^2 + 16147^2 .

It is not an unprimeable number, because it can be changed into a prime (25884090937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471022733 + ... + 6471022736.

Almost surely, 2^25884090938 is an apocalyptic number.

25884090938 is a deficient number, since it is larger than the sum of its proper divisors (12942045472).

25884090938 is a wasteful number, since it uses less digits than its factorization.

25884090938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12942045471.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 25884090938 in words is "twenty-five billion, eight hundred eighty-four million, ninety thousand, nine hundred thirty-eight".