625778582731413 has 4 divisors (see below), whose sum is σ = 834371443641888. Its totient is φ = 417185721820940.

The previous prime is 625778582731373. The next prime is 625778582731417. The reversal of 625778582731413 is 314137285877526.

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 625778582731413 - 2²⁸ = 625778314295957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625778582731417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104296430455233 + ... + 104296430455238.

It is an arithmetic number, because the mean of its divisors is an integer number (208592860910472).

Almost surely, 2^{625778582731413} is an apocalyptic number.

It is an amenable number.

625778582731413 is a deficient number, since it is larger than the sum of its proper divisors (208592860910475).

625778582731413 is a wasteful number, since it uses less digits than its factorization.

625778582731413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208592860910474.

The product of its digits is 474163200, while the sum is 69.

The spelling of 625778582731413 in words is "six hundred twenty-five trillion, seven hundred seventy-eight billion, five hundred eighty-two million, seven hundred thirty-one thousand, four hundred thirteen".