1252722217055 has 8 divisors (see below), whose sum is σ = 1515103406592. Its totient is φ = 994286609568.

The previous prime is 1252722217039. The next prime is 1252722217067. The reversal of 1252722217055 is 5507122272521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252722217055 - 2⁴ = 1252722217039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986394812 + ... + 986396081.

It is an arithmetic number, because the mean of its divisors is an integer number (189387925824).

Almost surely, 2^{1252722217055} is an apocalyptic number.

1252722217055 is a deficient number, since it is larger than the sum of its proper divisors (262381189537).

1252722217055 is a wasteful number, since it uses less digits than its factorization.

1252722217055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972791025.

The product of its (nonzero) digits is 196000, while the sum is 41.

Adding to 1252722217055 its reverse (5507122272521), we get a palindrome (6759844489576).

The spelling of 1252722217055 in words is "one trillion, two hundred fifty-two billion, seven hundred twenty-two million, two hundred seventeen thousand, fifty-five".