40250235121 has 2 divisors, whose sum is σ = 40250235122. Its totient is φ = 40250235120.

The previous prime is 40250235119. The next prime is 40250235127. The reversal of 40250235121 is 12153205204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24440944896 + 15809290225 = 156336^2 + 125735^2 .

It is a cyclic number.

It is not a de Polignac number, because 40250235121 - 2¹ = 40250235119 is a prime.

Together with 40250235119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40250235127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125117560 + 20125117561.

It is an arithmetic number, because the mean of its divisors is an integer number (20125117561).

Almost surely, 2^40250235121 is an apocalyptic number.

It is an amenable number.

40250235121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40250235121 is an equidigital number, since it uses as much as digits as its factorization.

40250235121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 40250235121 in words is "forty billion, two hundred fifty million, two hundred thirty-five thousand, one hundred twenty-one".