25021212052 has 6 divisors (see below), whose sum is σ = 43787121098. Its totient is φ = 12510606024.

The previous prime is 25021212023. The next prime is 25021212053.

25021212052 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 18486753156 + 6534458896 = 135966^2 + 80836^2 .

It is a super-2 number, since 2×25021212052² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25021212053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127651503 + ... + 3127651510.

Almost surely, 2^25021212052 is an apocalyptic number.

It is an amenable number.

25021212052 is a deficient number, since it is larger than the sum of its proper divisors (18765909046).

25021212052 is a wasteful number, since it uses less digits than its factorization.

25021212052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255303017 (or 6255303015 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 25021212052 in words is "twenty-five billion, twenty-one million, two hundred twelve thousand, fifty-two".