1979931823025 has 24 divisors (see below), whose sum is σ = 2799498180024. Its totient is φ = 1376097408000.

The previous prime is 1979931823019. The next prime is 1979931823027. The reversal of 1979931823025 is 5203281399791.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 185789447089 + 1794142375936 = 431033^2 + 1339456^2 .

It is not a de Polignac number, because 1979931823025 - 2¹² = 1979931818929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1979931823027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179173826 + ... + 179184875.

It is an arithmetic number, because the mean of its divisors is an integer number (116645757501).

Almost surely, 2^{1979931823025} is an apocalyptic number.

It is an amenable number.

1979931823025 is a deficient number, since it is larger than the sum of its proper divisors (819566356999).

1979931823025 is a wasteful number, since it uses less digits than its factorization.

1979931823025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358358741 (or 358358736 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 1979931823025 in words is "one trillion, nine hundred seventy-nine billion, nine hundred thirty-one million, eight hundred twenty-three thousand, twenty-five".