25001812712 has 8 divisors (see below), whose sum is σ = 46878398850. Its totient is φ = 12500906352.

The previous prime is 25001812711. The next prime is 25001812721. The reversal of 25001812712 is 21721810052.

It can be written as a sum of positive squares in only one way, i.e., 23215397956 + 1786414756 = 152366^2 + 42266^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (25001812711) 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, 1562613287 + ... + 1562613302.

Almost surely, 2^25001812712 is an apocalyptic number.

It is an amenable number.

25001812712 is a deficient number, since it is larger than the sum of its proper divisors (21876586138).

25001812712 is a wasteful number, since it uses less digits than its factorization.

25001812712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125226595 (or 3125226591 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The spelling of 25001812712 in words is "twenty-five billion, one million, eight hundred twelve thousand, seven hundred twelve".