1625500016 has 80 divisors (see below), whose sum is σ = 3822344640. Its totient is φ = 653721600.

The previous prime is 1625500013. The next prime is 1625500031. The reversal of 1625500016 is 6100055261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625500013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762440 + ... + 764568.

It is an arithmetic number, because the mean of its divisors is an integer number (47779308).

Almost surely, 2^1625500016 is an apocalyptic number.

1625500016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625500016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1911172320).

1625500016 is an abundant number, since it is smaller than the sum of its proper divisors (2196844624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625500016 is a wasteful number, since it uses less digits than its factorization.

1625500016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1625500016 is about 40317.4901996640. The cubic root of 1625500016 is about 1175.7879166190.

Adding to 1625500016 its reverse (6100055261), we get a palindrome (7725555277).

The spelling of 1625500016 in words is "one billion, six hundred twenty-five million, five hundred thousand, sixteen".