3125651520 has 112 divisors (see below), whose sum is σ = 10035722880. Its totient is φ = 824119296.

The previous prime is 3125651513. The next prime is 3125651527. The reversal of 3125651520 is 251565213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3125651513) and next prime (3125651527).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (3125651527) 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, 67149 + ... + 103731.

Almost surely, 2^3125651520 is an apocalyptic number.

3125651520 is a gapful number since it is divisible by the number (30) 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 3125651520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5017861440).

3125651520 is an abundant number, since it is smaller than the sum of its proper divisors (6910071360).

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

3125651520 is a wasteful number, since it uses less digits than its factorization.

3125651520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36692 (or 36682 counting only the distinct ones).

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

The square root of 3125651520 is about 55907.5265058292. The cubic root of 3125651520 is about 1462.1104650349.

The spelling of 3125651520 in words is "three billion, one hundred twenty-five million, six hundred fifty-one thousand, five hundred twenty".