625597442706916 has 27 divisors (see below), whose sum is σ = 1096626889181019. Its totient is φ = 312276346861248.

The previous prime is 625597442706911. The next prime is 625597442706959. The reversal of 625597442706916 is 619607244795526.

The square root of 625597442706916 is 25011946.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 64073140884900 + 561524301822016 = 8004570^2 + 23696504^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625597442706911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30864731230 + ... + 30864751498.

Almost surely, 2^{625597442706916} is an apocalyptic number.

625597442706916 is the 25011946-th square number.

It is an amenable number.

625597442706916 is a deficient number, since it is larger than the sum of its proper divisors (471029446474103).

625597442706916 is an frugal number, since it uses more digits than its factorization.

625597442706916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41776 (or 20888 counting only the distinct ones).

The product of its (nonzero) digits is 1371686400, while the sum is 73.

The spelling of 625597442706916 in words is "six hundred twenty-five trillion, five hundred ninety-seven billion, four hundred forty-two million, seven hundred six thousand, nine hundred sixteen".