625135062031481 has 2 divisors, whose sum is σ = 625135062031482. Its totient is φ = 625135062031480.

The previous prime is 625135062031429. The next prime is 625135062031547. The reversal of 625135062031481 is 184130260531526.

625135062031481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600657553155856 + 24477508875625 = 24508316^2 + 4947475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625135062031481 is a prime.

It is a super-2 number, since 2×625135062031481² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (625135062031681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312567531015740 + 312567531015741.

It is an arithmetic number, because the mean of its divisors is an integer number (312567531015741).

Almost surely, 2^{625135062031481} is an apocalyptic number.

It is an amenable number.

625135062031481 is a deficient number, since it is larger than the sum of its proper divisors (1).

625135062031481 is an equidigital number, since it uses as much as digits as its factorization.

625135062031481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 625135062031481 in words is "six hundred twenty-five trillion, one hundred thirty-five billion, sixty-two million, thirty-one thousand, four hundred eighty-one".