42008122180025 has 24 divisors (see below), whose sum is σ = 52190069793624. Its totient is φ = 33542042547200.

The previous prime is 42008122179983. The next prime is 42008122180103. The reversal of 42008122180025 is 52008122180024.

It can be written as a sum of positive squares in 12 ways, for example, as 2624364360121 + 39383757819904 = 1619989^2 + 6275648^2 .

It is not a de Polignac number, because 42008122180025 - 2²² = 42008117985721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27379139 + ... + 28872711.

It is an arithmetic number, because the mean of its divisors is an integer number (2174586241401).

Almost surely, 2^{42008122180025} is an apocalyptic number.

It is an amenable number.

42008122180025 is a deficient number, since it is larger than the sum of its proper divisors (10181947613599).

42008122180025 is a wasteful number, since it uses less digits than its factorization.

42008122180025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495741 (or 1495736 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

Subtracting 42008122180025 from its reverse (52008122180024), we obtain a palindrome (9999999999999).

The spelling of 42008122180025 in words is "forty-two trillion, eight billion, one hundred twenty-two million, one hundred eighty thousand, twenty-five".