897809825475 has 36 divisors (see below), whose sum is σ = 1702669935096. Its totient is φ = 450665322240.

The previous prime is 897809825411. The next prime is 897809825501. The reversal of 897809825475 is 574528908798.

897809825475 is a `hidden beast` number, since 8 + 9 + 78 + 0 + 9 + 8 + 2 + 547 + 5 = 666.

It is not a de Polignac number, because 897809825475 - 2⁶ = 897809825411 is a prime.

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 35 ways as a sum of consecutive naturals, for example, 117356937 + ... + 117364586.

It is an arithmetic number, because the mean of its divisors is an integer number (47296387086).

Almost surely, 2^897809825475 is an apocalyptic number.

897809825475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

897809825475 is a deficient number, since it is larger than the sum of its proper divisors (804860109621).

897809825475 is a wasteful number, since it uses less digits than its factorization.

897809825475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234721556 (or 234721548 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 72.

The spelling of 897809825475 in words is "eight hundred ninety-seven billion, eight hundred nine million, eight hundred twenty-five thousand, four hundred seventy-five".