16000000625 has 30 divisors (see below), whose sum is σ = 23257906650. Its totient is φ = 10971408000.

The previous prime is 16000000607. The next prime is 16000000633. The reversal of 16000000625 is 52600000061.

It can be written as a sum of positive squares in 5 ways, for example, as 10860974656 + 5139025969 = 104216^2 + 71687^2 .

It is a sliding number, since 16000000625 = 625 + 16000000000 and 1/625 + 1/16000000000 = 0.0016000000625.

It is not a de Polignac number, because 16000000625 - 2⁶ = 16000000561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16000000597 and 16000000606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 230600 + ... + 291849.

It is an arithmetic number, because the mean of its divisors is an integer number (775263555).

Almost surely, 2^16000000625 is an apocalyptic number.

It is an amenable number.

16000000625 is a deficient number, since it is larger than the sum of its proper divisors (7257906025).

16000000625 is an frugal number, since it uses more digits than its factorization.

16000000625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522483 (or 522461 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 16000000625 its reverse (52600000061), we get a palindrome (68600000686).

It can be divided in two parts, 16000000 and 625, that multiplied together give a 10-th power (10000000000 = 10¹⁰).

The spelling of 16000000625 in words is "sixteen billion, six hundred twenty-five", and thus it is an aban number.