84890699194825 has 6 divisors (see below), whose sum is σ = 105264467001614. Its totient is φ = 67912559355840.

The previous prime is 84890699194823. The next prime is 84890699194867. The reversal of 84890699194825 is 52849199609848.

It can be written as a sum of positive squares in 3 ways, for example, as 6072099290569 + 78818599904256 = 2464163^2 + 8877984^2 .

It is not a de Polignac number, because 84890699194825 - 2¹ = 84890699194823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84890699194823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1697813983872 + ... + 1697813983921.

Almost surely, 2^{84890699194825} is an apocalyptic number.

It is an amenable number.

84890699194825 is a deficient number, since it is larger than the sum of its proper divisors (20373767806789).

84890699194825 is a wasteful number, since it uses less digits than its factorization.

84890699194825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395627967803 (or 3395627967798 counting only the distinct ones).

The product of its (nonzero) digits is 3224862720, while the sum is 82.

The spelling of 84890699194825 in words is "eighty-four trillion, eight hundred ninety billion, six hundred ninety-nine million, one hundred ninety-four thousand, eight hundred twenty-five".