42225304213949 has 2 divisors, whose sum is σ = 42225304213950. Its totient is φ = 42225304213948.

The previous prime is 42225304213927. The next prime is 42225304213951. The reversal of 42225304213949 is 94931240352224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39477119418724 + 2748184795225 = 6283082^2 + 1657765^2 .

It is a cyclic number.

It is not a de Polignac number, because 42225304213949 - 2⁸ = 42225304213693 is a prime.

Together with 42225304213951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42225304213897 and 42225304213906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42225304213919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112652106974 + 21112652106975.

It is an arithmetic number, because the mean of its divisors is an integer number (21112652106975).

Almost surely, 2^{42225304213949} is an apocalyptic number.

It is an amenable number.

42225304213949 is a deficient number, since it is larger than the sum of its proper divisors (1).

42225304213949 is an equidigital number, since it uses as much as digits as its factorization.

42225304213949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 42225304213949 in words is "forty-two trillion, two hundred twenty-five billion, three hundred four million, two hundred thirteen thousand, nine hundred forty-nine".