2151625332 has 96 divisors (see below), whose sum is σ = 5490955008. Its totient is φ = 652990464.

The previous prime is 2151625319. The next prime is 2151625381. The reversal of 2151625332 is 2335261512.

It is a super-2 number, since 2×2151625332² = 9258983138608220448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2151625332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1486233 + ... + 1487679.

It is an arithmetic number, because the mean of its divisors is an integer number (57197448).

Almost surely, 2^2151625332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151625332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745477504).

2151625332 is an abundant number, since it is smaller than the sum of its proper divisors (3339329676).

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

2151625332 is a wasteful number, since it uses less digits than its factorization.

2151625332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1703 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 2151625332 is about 46385.6155720715. The cubic root of 2151625332 is about 1290.9880321920.

Adding to 2151625332 its reverse (2335261512), we get a palindrome (4486886844).

The spelling of 2151625332 in words is "two billion, one hundred fifty-one million, six hundred twenty-five thousand, three hundred thirty-two".