15625056 has 48 divisors (see below), whose sum is σ = 41900544. Its totient is φ = 5096064.

The previous prime is 15625031. The next prime is 15625061. The reversal of 15625056 is 65052651.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (872928).

Almost surely, 2^15625056 is an apocalyptic number.

15625056 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 15625056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20950272).

15625056 is an abundant number, since it is smaller than the sum of its proper divisors (26275488).

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

15625056 is a wasteful number, since it uses less digits than its factorization.

15625056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 15625056 is about 3952.8541587061. The cubic root of 15625056 is about 250.0002986663. Note that the first 3 decimals are identical.

The spelling of 15625056 in words is "fifteen million, six hundred twenty-five thousand, fifty-six".