25505605097280 has 448 divisors, whose sum is σ = 112180499804160. Its totient is φ = 5299865856000.

The previous prime is 25505605097227. The next prime is 25505605097369. The reversal of 25505605097280 is 8279050650552.

It is a happy number.

25505605097280 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 5 + 60 + 509 + 72 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 18503796 + ... + 19834355.

Almost surely, 2^{25505605097280} is an apocalyptic number.

25505605097280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505605097280 is an abundant number, since it is smaller than the sum of its proper divisors (86674894706880).

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

25505605097280 is a wasteful number, since it uses less digits than its factorization.

25505605097280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38338195 (or 38338179 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 25505605097280 in words is "twenty-five trillion, five hundred five billion, six hundred five million, ninety-seven thousand, two hundred eighty".