15625575996 has 12 divisors (see below), whose sum is σ = 36459677352. Its totient is φ = 5208525328.

The previous prime is 15625575991. The next prime is 15625575997. The reversal of 15625575996 is 69957552651.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15625575991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651065655 + ... + 651065678.

It is an arithmetic number, because the mean of its divisors is an integer number (3038306446).

Almost surely, 2^15625575996 is an apocalyptic number.

It is an amenable number.

15625575996 is an abundant number, since it is smaller than the sum of its proper divisors (20834101356).

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

15625575996 is a wasteful number, since it uses less digits than its factorization.

15625575996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302131340 (or 1302131338 counting only the distinct ones).

The product of its digits is 25515000, while the sum is 60.

The spelling of 15625575996 in words is "fifteen billion, six hundred twenty-five million, five hundred seventy-five thousand, nine hundred ninety-six".