25954858612782 has 72 divisors (see below), whose sum is σ = 61837039391400. Its totient is φ = 7861999490400.

The previous prime is 25954858612763. The next prime is 25954858612801. The reversal of 25954858612782 is 28721685845952.

25954858612782 is a `hidden beast` number, since 2 + 5 + 9 + 5 + 485 + 8 + 61 + 2 + 7 + 82 = 666.

It is an interprime number because it is at equal distance from previous prime (25954858612763) and next prime (25954858612801).

It is a self number, because there is not a number n which added to its sum of digits gives 25954858612782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3158344 + ... + 7866692.

It is an arithmetic number, because the mean of its divisors is an integer number (858847769325).

Almost surely, 2^{25954858612782} is an apocalyptic number.

25954858612782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25954858612782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30918519695700).

25954858612782 is an abundant number, since it is smaller than the sum of its proper divisors (35882180778618).

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

25954858612782 is a wasteful number, since it uses less digits than its factorization.

25954858612782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710910 (or 4710896 counting only the distinct ones).

The product of its digits is 774144000, while the sum is 72.

The spelling of 25954858612782 in words is "twenty-five trillion, nine hundred fifty-four billion, eight hundred fifty-eight million, six hundred twelve thousand, seven hundred eighty-two".