40221251330245 has 4 divisors (see below), whose sum is σ = 48265501596300. Its totient is φ = 32177001064192.

The previous prime is 40221251330233. The next prime is 40221251330279. The reversal of 40221251330245 is 54203315212204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21529757760289 + 18691493569956 = 4640017^2 + 4323366^2 .

It is a cyclic number.

It is not a de Polignac number, because 40221251330245 - 2²³ = 40221242941637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40221251330245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022125133020 + ... + 4022125133029.

It is an arithmetic number, because the mean of its divisors is an integer number (12066375399075).

Almost surely, 2^{40221251330245} is an apocalyptic number.

It is an amenable number.

40221251330245 is a deficient number, since it is larger than the sum of its proper divisors (8044250266055).

40221251330245 is an equidigital number, since it uses as much as digits as its factorization.

40221251330245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044250266054.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 40221251330245 its reverse (54203315212204), we get a palindrome (94424566542449).

The spelling of 40221251330245 in words is "forty trillion, two hundred twenty-one billion, two hundred fifty-one million, three hundred thirty thousand, two hundred forty-five".