25210221082 has 4 divisors (see below), whose sum is σ = 37815331626. Its totient is φ = 12605110540.

The previous prime is 25210221037. The next prime is 25210221191. The reversal of 25210221082 is 28012201252.

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., 17580373281 + 7629847801 = 132591^2 + 87349^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6302555269 + ... + 6302555272.

Almost surely, 2^25210221082 is an apocalyptic number.

25210221082 is a deficient number, since it is larger than the sum of its proper divisors (12605110544).

25210221082 is a wasteful number, since it uses less digits than its factorization.

25210221082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12605110543.

The product of its (nonzero) digits is 1280, while the sum is 25.

The spelling of 25210221082 in words is "twenty-five billion, two hundred ten million, two hundred twenty-one thousand, eighty-two".