625778682664107 has 32 divisors (see below), whose sum is σ = 984489687777280. Its totient is φ = 345995799622560.

The previous prime is 625778682664103. The next prime is 625778682664111. The reversal of 625778682664107 is 701466286877526.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (625778682664103) and next prime (625778682664111).

It is not a de Polignac number, because 625778682664107 - 2² = 625778682664103 is a prime.

It is a super-2 number, since 2×625778682664107² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625778682664103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75106363 + ... + 83021220.

It is an arithmetic number, because the mean of its divisors is an integer number (30765302743040).

Almost surely, 2^{625778682664107} is an apocalyptic number.

625778682664107 is a deficient number, since it is larger than the sum of its proper divisors (358711005113173).

625778682664107 is a wasteful number, since it uses less digits than its factorization.

625778682664107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158133703.

The product of its (nonzero) digits is 2275983360, while the sum is 75.

The spelling of 625778682664107 in words is "six hundred twenty-five trillion, seven hundred seventy-eight billion, six hundred eighty-two million, six hundred sixty-four thousand, one hundred seven".