25512525140138 has 16 divisors (see below), whose sum is σ = 38369509793160. Its totient is φ = 12722707501056.

The previous prime is 25512525140131. The next prime is 25512525140143. The reversal of 25512525140138 is 83104152521552.

It can be written as a sum of positive squares in 4 ways, for example, as 15277177411609 + 10235347728529 = 3908603^2 + 3199273^2 .

It is not an unprimeable number, because it can be changed into a prime (25512525140131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045495 + ... + 7430282.

Almost surely, 2^{25512525140138} is an apocalyptic number.

25512525140138 is a deficient number, since it is larger than the sum of its proper divisors (12856984653022).

25512525140138 is a wasteful number, since it uses less digits than its factorization.

25512525140138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479321.

The product of its (nonzero) digits is 480000, while the sum is 44.

The spelling of 25512525140138 in words is "twenty-five trillion, five hundred twelve billion, five hundred twenty-five million, one hundred forty thousand, one hundred thirty-eight".