242245025002553 has 4 divisors (see below), whose sum is σ = 242867762856420. Its totient is φ = 241622287148688.

The previous prime is 242245025002549. The next prime is 242245025002579. The reversal of 242245025002553 is 355200520542242.

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 19626778364944 + 222618246637609 = 4430212^2 + 14920397^2 .

It is a cyclic number.

It is not a de Polignac number, because 242245025002553 - 2² = 242245025002549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242245025002553.

It is not an unprimeable number, because it can be changed into a prime (242245025002153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311368926350 + ... + 311368927127.

It is an arithmetic number, because the mean of its divisors is an integer number (60716940714105).

Almost surely, 2^{242245025002553} is an apocalyptic number.

It is an amenable number.

242245025002553 is a deficient number, since it is larger than the sum of its proper divisors (622737853867).

242245025002553 is an equidigital number, since it uses as much as digits as its factorization.

242245025002553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622737853866.

The product of its (nonzero) digits is 960000, while the sum is 41.

Adding to 242245025002553 its reverse (355200520542242), we get a palindrome (597445545544795).

The spelling of 242245025002553 in words is "two hundred forty-two trillion, two hundred forty-five billion, twenty-five million, two thousand, five hundred fifty-three".