625485964631149 has 2 divisors, whose sum is σ = 625485964631150. Its totient is φ = 625485964631148.

The previous prime is 625485964631041. The next prime is 625485964631167. The reversal of 625485964631149 is 941136469584526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461883497675625 + 163602466955524 = 21491475^2 + 12790718^2 .

It is a cyclic number.

It is not a de Polignac number, because 625485964631149 - 2¹³ = 625485964622957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625485964634149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312742982315574 + 312742982315575.

It is an arithmetic number, because the mean of its divisors is an integer number (312742982315575).

Almost surely, 2^{625485964631149} is an apocalyptic number.

It is an amenable number.

625485964631149 is a deficient number, since it is larger than the sum of its proper divisors (1).

625485964631149 is an equidigital number, since it uses as much as digits as its factorization.

625485964631149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1343692800, while the sum is 73.

The spelling of 625485964631149 in words is "six hundred twenty-five trillion, four hundred eighty-five billion, nine hundred sixty-four million, six hundred thirty-one thousand, one hundred forty-nine".