625212116577 has 12 divisors (see below), whose sum is σ = 903409405860. Its totient is φ = 416657968128.

The previous prime is 625212116531. The next prime is 625212116611. The reversal of 625212116577 is 775611212526.

625212116577 is a `hidden beast` number, since 6 + 2 + 52 + 1 + 21 + 1 + 6 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 163279838241 + 461932278336 = 404079^2 + 679656^2 .

It is not a de Polignac number, because 625212116577 - 2²³ = 625203727969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625214116577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12482752 + ... + 12532737.

It is an arithmetic number, because the mean of its divisors is an integer number (75284117155).

Almost surely, 2^625212116577 is an apocalyptic number.

It is an amenable number.

625212116577 is a deficient number, since it is larger than the sum of its proper divisors (278197289283).

625212116577 is a wasteful number, since it uses less digits than its factorization.

625212116577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25018272 (or 25018269 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 625212116577 in words is "six hundred twenty-five billion, two hundred twelve million, one hundred sixteen thousand, five hundred seventy-seven".