25871005252 has 12 divisors (see below), whose sum is σ = 45275609596. Its totient is φ = 12935116800.

The previous prime is 25871005231. The next prime is 25871005253. The reversal of 25871005252 is 25250017852.

It can be written as a sum of positive squares in 2 ways, for example, as 7822694916 + 18048310336 = 88446^2 + 134344^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25871005253) 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 3 ways as a sum of consecutive naturals, for example, 97948 + ... + 247660.

Almost surely, 2^25871005252 is an apocalyptic number.

It is an amenable number.

25871005252 is a deficient number, since it is larger than the sum of its proper divisors (19404604344).

25871005252 is a wasteful number, since it uses less digits than its factorization.

25871005252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192918 (or 192916 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 37.

The spelling of 25871005252 in words is "twenty-five billion, eight hundred seventy-one million, five thousand, two hundred fifty-two".