2125553652 has 72 divisors (see below), whose sum is σ = 5652875592. Its totient is φ = 672537600.

The previous prime is 2125553621. The next prime is 2125553663. The reversal of 2125553652 is 2563555212.

2125553652 is a `hidden beast` number, since 21 + 2 + 55 + 536 + 52 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5503716 + 2120049936 = 2346^2 + 46044^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35152 + ... + 74072.

It is an arithmetic number, because the mean of its divisors is an integer number (78512161).

Almost surely, 2^2125553652 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 2125553652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2826437796).

2125553652 is an abundant number, since it is smaller than the sum of its proper divisors (3527321940).

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

2125553652 is a wasteful number, since it uses less digits than its factorization.

2125553652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39009 (or 39004 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 2125553652 is about 46103.7270944552. The cubic root of 2125553652 is about 1285.7524401587.

The spelling of 2125553652 in words is "two billion, one hundred twenty-five million, five hundred fifty-three thousand, six hundred fifty-two".