625144243441 has 4 divisors (see below), whose sum is σ = 628285672000. Its totient is φ = 622002814884.

The previous prime is 625144243433. The next prime is 625144243453. The reversal of 625144243441 is 144342441526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 625144243441 - 2³ = 625144243433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625144243394 and 625144243403.

It is not an unprimeable number, because it can be changed into a prime (625144243541) 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, 1570713981 + ... + 1570714378.

It is an arithmetic number, because the mean of its divisors is an integer number (157071418000).

Almost surely, 2^625144243441 is an apocalyptic number.

It is an amenable number.

625144243441 is a deficient number, since it is larger than the sum of its proper divisors (3141428559).

625144243441 is a wasteful number, since it uses less digits than its factorization.

625144243441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141428558.

The product of its digits is 368640, while the sum is 40.

Adding to 625144243441 its reverse (144342441526), we get a palindrome (769486684967).

The spelling of 625144243441 in words is "six hundred twenty-five billion, one hundred forty-four million, two hundred forty-three thousand, four hundred forty-one".