242625340561 has 4 divisors (see below), whose sum is σ = 243569408292. Its totient is φ = 241681272832.

The previous prime is 242625340543. The next prime is 242625340579. The reversal of 242625340561 is 165043526242.

It is a happy number.

242625340561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (242625340543) and next prime (242625340579).

It can be written as a sum of positive squares in 2 ways, for example, as 152661336961 + 89964003600 = 390719^2 + 299940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242625340561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242625340541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472033480 + ... + 472033993.

It is an arithmetic number, because the mean of its divisors is an integer number (60892352073).

Almost surely, 2^242625340561 is an apocalyptic number.

It is an amenable number.

242625340561 is a deficient number, since it is larger than the sum of its proper divisors (944067731).

242625340561 is an equidigital number, since it uses as much as digits as its factorization.

242625340561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944067730.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 242625340561 in words is "two hundred forty-two billion, six hundred twenty-five million, three hundred forty thousand, five hundred sixty-one".