25490786321430 has 64 divisors (see below), whose sum is σ = 68011840442880. Its totient is φ = 6793901993952.

The previous prime is 25490786321393. The next prime is 25490786321437. The reversal of 25490786321430 is 3412368709452.

25490786321430 is a `hidden beast` number, since 2 + 5 + 490 + 7 + 8 + 6 + 3 + 2 + 143 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25490786321437) 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 31 ways as a sum of consecutive naturals, for example, 24779874 + ... + 25788053.

It is an arithmetic number, because the mean of its divisors is an integer number (1062685006920).

It is a 1-persistent number, because it is pandigital, but 2⋅25490786321430 = 50981572642860 is not.

Almost surely, 2^{25490786321430} is an apocalyptic number.

25490786321430 is an abundant number, since it is smaller than the sum of its proper divisors (42521054121450).

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

25490786321430 is a wasteful number, since it uses less digits than its factorization.

25490786321430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50569810 (or 50569804 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 25490786321430 in words is "twenty-five trillion, four hundred ninety billion, seven hundred eighty-six million, three hundred twenty-one thousand, four hundred thirty".