25491623485535 has 16 divisors (see below), whose sum is σ = 32400937236096. Its totient is φ = 19186830555648.

The previous prime is 25491623485499. The next prime is 25491623485547. The reversal of 25491623485535 is 53558432619452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25491623485535 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53373527 + ... + 53849016.

It is an arithmetic number, because the mean of its divisors is an integer number (2025058577256).

Almost surely, 2^{25491623485535} is an apocalyptic number.

25491623485535 is a deficient number, since it is larger than the sum of its proper divisors (6909313750561).

25491623485535 is a wasteful number, since it uses less digits than its factorization.

25491623485535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107225362.

The product of its digits is 155520000, while the sum is 62.

The spelling of 25491623485535 in words is "twenty-five trillion, four hundred ninety-one billion, six hundred twenty-three million, four hundred eighty-five thousand, five hundred thirty-five".