144625853657 has 4 divisors (see below), whose sum is σ = 144670757796. Its totient is φ = 144580949520.

The previous prime is 144625853653. The next prime is 144625853663. The reversal of 144625853657 is 756358526441.

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 74037865801 + 70587987856 = 272099^2 + 265684^2 .

It is a cyclic number.

It is not a de Polignac number, because 144625853657 - 2² = 144625853653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144625853653) 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, 22447238 + ... + 22453679.

It is an arithmetic number, because the mean of its divisors is an integer number (36167689449).

Almost surely, 2^144625853657 is an apocalyptic number.

It is an amenable number.

144625853657 is a deficient number, since it is larger than the sum of its proper divisors (44904139).

144625853657 is an equidigital number, since it uses as much as digits as its factorization.

144625853657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44904138.

The product of its digits is 24192000, while the sum is 56.

The spelling of 144625853657 in words is "one hundred forty-four billion, six hundred twenty-five million, eight hundred fifty-three thousand, six hundred fifty-seven".