625623706721 has 32 divisors (see below), whose sum is σ = 744534685440. Its totient is φ = 519800776704.

The previous prime is 625623706691. The next prime is 625623706751. The reversal of 625623706721 is 127607326526.

It is an interprime number because it is at equal distance from previous prime (625623706691) and next prime (625623706751).

It is a cyclic number.

It is not a de Polignac number, because 625623706721 - 2⁶ = 625623706657 is a prime.

It is a super-2 number, since 2×625623706721² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (625623706751) 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, 45582566 + ... + 45596288.

It is an arithmetic number, because the mean of its divisors is an integer number (23266708920).

Almost surely, 2^625623706721 is an apocalyptic number.

It is an amenable number.

625623706721 is a deficient number, since it is larger than the sum of its proper divisors (118910978719).

625623706721 is a wasteful number, since it uses less digits than its factorization.

625623706721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22745.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 625623706721 in words is "six hundred twenty-five billion, six hundred twenty-three million, seven hundred six thousand, seven hundred twenty-one".