25064612544 has 56 divisors (see below), whose sum is σ = 66329407600. Its totient is φ = 8353281024.

The previous prime is 25064612543. The next prime is 25064612579. The reversal of 25064612544 is 44521646052.

It is not an unprimeable number, because it can be changed into a prime (25064612543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440762 + ... + 1458054.

Almost surely, 2^25064612544 is an apocalyptic number.

25064612544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25064612544 is an abundant number, since it is smaller than the sum of its proper divisors (41264795056).

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

25064612544 is a wasteful number, since it uses less digits than its factorization.

25064612544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24857 (or 24847 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 25064612544 in words is "twenty-five billion, sixty-four million, six hundred twelve thousand, five hundred forty-four".