625144402123 has 2 divisors, whose sum is σ = 625144402124. Its totient is φ = 625144402122.

The previous prime is 625144402121. The next prime is 625144402139. The reversal of 625144402123 is 321204441526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625144402123 - 2¹ = 625144402121 is a prime.

Together with 625144402121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (625144402121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312572201061 + 312572201062.

It is an arithmetic number, because the mean of its divisors is an integer number (312572201062).

Almost surely, 2^625144402123 is an apocalyptic number.

625144402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

625144402123 is an equidigital number, since it uses as much as digits as its factorization.

625144402123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 625144402123 its reverse (321204441526), we get a palindrome (946348843649).

The spelling of 625144402123 in words is "six hundred twenty-five billion, one hundred forty-four million, four hundred two thousand, one hundred twenty-three".