42361421825 has 6 divisors (see below), whose sum is σ = 52528163094. Its totient is φ = 33889137440.

The previous prime is 42361421819. The next prime is 42361421867. The reversal of 42361421825 is 52812416324.

It can be written as a sum of positive squares in 3 ways, for example, as 339701761 + 42021720064 = 18431^2 + 204992^2 .

It is not a de Polignac number, because 42361421825 - 2²⁶ = 42294312961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 847228412 + ... + 847228461.

It is an arithmetic number, because the mean of its divisors is an integer number (8754693849).

It is a Proth number, since it is equal to 40399 ⋅ 2²⁰ + 1 and 40399 < 2²⁰.

Almost surely, 2^42361421825 is an apocalyptic number.

It is an amenable number.

42361421825 is a deficient number, since it is larger than the sum of its proper divisors (10166741269).

42361421825 is a wasteful number, since it uses less digits than its factorization.

42361421825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694456883 (or 1694456878 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The spelling of 42361421825 in words is "forty-two billion, three hundred sixty-one million, four hundred twenty-one thousand, eight hundred twenty-five".