25540705533612 has 54 divisors (see below), whose sum is σ = 59799967267852. Its totient is φ = 8484384655600.

The previous prime is 25540705533589. The next prime is 25540705533613. The reversal of 25540705533612 is 21633550704552.

It is not an unprimeable number, because it can be changed into a prime (25540705533613) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5444616187 + ... + 5444620877.

Almost surely, 2^{25540705533612} is an apocalyptic number.

It is an amenable number.

25540705533612 is an abundant number, since it is smaller than the sum of its proper divisors (34259261734240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25540705533612 is an frugal number, since it uses more digits than its factorization.

25540705533612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011 (or 5007 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 48.

The spelling of 25540705533612 in words is "twenty-five trillion, five hundred forty billion, seven hundred five million, five hundred thirty-three thousand, six hundred twelve".