42250649653 has 2 divisors, whose sum is σ = 42250649654. Its totient is φ = 42250649652.

The previous prime is 42250649647. The next prime is 42250649743. The reversal of 42250649653 is 35694605224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30089412369 + 12161237284 = 173463^2 + 110278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42250649653 is a prime.

It is a super-2 number, since 2×42250649653² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42250649153) 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, 21125324826 + 21125324827.

It is an arithmetic number, because the mean of its divisors is an integer number (21125324827).

Almost surely, 2^42250649653 is an apocalyptic number.

It is an amenable number.

42250649653 is a deficient number, since it is larger than the sum of its proper divisors (1).

42250649653 is an equidigital number, since it uses as much as digits as its factorization.

42250649653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 42250649653 in words is "forty-two billion, two hundred fifty million, six hundred forty-nine thousand, six hundred fifty-three".