40025505439 has 2 divisors, whose sum is σ = 40025505440. Its totient is φ = 40025505438.

The previous prime is 40025505427. The next prime is 40025505463. The reversal of 40025505439 is 93450552004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40025505439 - 2⁹ = 40025504927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40025505398 and 40025505407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40025500439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012752719 + 20012752720.

It is an arithmetic number, because the mean of its divisors is an integer number (20012752720).

Almost surely, 2^40025505439 is an apocalyptic number.

40025505439 is a deficient number, since it is larger than the sum of its proper divisors (1).

40025505439 is an equidigital number, since it uses as much as digits as its factorization.

40025505439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 40025505439 in words is "forty billion, twenty-five million, five hundred five thousand, four hundred thirty-nine".