25612335581040 has 400 divisors, whose sum is σ = 100840176544800. Its totient is φ = 5972754806784.

The previous prime is 25612335581017. The next prime is 25612335581087. The reversal of 25612335581040 is 4018553321652.

It is a happy number.

25612335581040 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 23 + 3 + 5 + 581 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6400495 + ... + 9601614.

It is an arithmetic number, because the mean of its divisors is an integer number (252100441362).

Almost surely, 2^{25612335581040} is an apocalyptic number.

25612335581040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25612335581040 is an abundant number, since it is smaller than the sum of its proper divisors (75227840963760).

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

25612335581040 is a wasteful number, since it uses less digits than its factorization.

25612335581040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16002166 (or 16002151 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 25612335581040 in words is "twenty-five trillion, six hundred twelve billion, three hundred thirty-five million, five hundred eighty-one thousand, forty".