33140725381 has 2 divisors, whose sum is σ = 33140725382. Its totient is φ = 33140725380.

The previous prime is 33140725351. The next prime is 33140725393. The reversal of 33140725381 is 18352704133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32982192100 + 158533281 = 181610^2 + 12591^2 .

It is an emirp because it is prime and its reverse (18352704133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33140725381 - 2²³ = 33132336773 is a prime.

It is a super-2 number, since 2×33140725381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33140725381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33140725351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16570362690 + 16570362691.

It is an arithmetic number, because the mean of its divisors is an integer number (16570362691).

Almost surely, 2^33140725381 is an apocalyptic number.

It is an amenable number.

33140725381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33140725381 is an equidigital number, since it uses as much as digits as its factorization.

33140725381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 33140725381 in words is "thirty-three billion, one hundred forty million, seven hundred twenty-five thousand, three hundred eighty-one".