25012821052 has 24 divisors (see below), whose sum is σ = 44357160960. Its totient is φ = 12339565680.

The previous prime is 25012821049. The next prime is 25012821079.

25012821052 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25012821052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443277 + ... + 496507.

It is an arithmetic number, because the mean of its divisors is an integer number (1848215040).

Almost surely, 2^25012821052 is an apocalyptic number.

It is an amenable number.

25012821052 is a deficient number, since it is larger than the sum of its proper divisors (19344339908).

25012821052 is a wasteful number, since it uses less digits than its factorization.

25012821052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54801 (or 54799 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 25012821052 in words is "twenty-five billion, twelve million, eight hundred twenty-one thousand, fifty-two".