40025493973 has 2 divisors, whose sum is σ = 40025493974. Its totient is φ = 40025493972.

The previous prime is 40025493953. The next prime is 40025493983. The reversal of 40025493973 is 37939452004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34491175524 + 5534318449 = 185718^2 + 74393^2 .

It is a cyclic number.

It is not a de Polignac number, because 40025493973 - 2¹³ = 40025485781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40025493953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012746986 + 20012746987.

It is an arithmetic number, because the mean of its divisors is an integer number (20012746987).

Almost surely, 2^40025493973 is an apocalyptic number.

It is an amenable number.

40025493973 is a deficient number, since it is larger than the sum of its proper divisors (1).

40025493973 is an equidigital number, since it uses as much as digits as its factorization.

40025493973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 40025493973 in words is "forty billion, twenty-five million, four hundred ninety-three thousand, nine hundred seventy-three".