4251525632 has 40 divisors (see below), whose sum is σ = 8526602700. Its totient is φ = 2117791744.

The previous prime is 4251525583. The next prime is 4251525647. The reversal of 4251525632 is 2365251524.

It can be written as a sum of positive squares in 2 ways, for example, as 3102044416 + 1149481216 = 55696^2 + 33904^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4251525592 and 4251525601.

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 3 ways as a sum of consecutive naturals, for example, 122294 + ... + 153162.

Almost surely, 2^4251525632 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 4251525632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4263301350).

4251525632 is an abundant number, since it is smaller than the sum of its proper divisors (4275077068).

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

4251525632 is an equidigital number, since it uses as much as digits as its factorization.

4251525632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31156 (or 31140 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 4251525632 is about 65203.7240654244. The cubic root of 4251525632 is about 1619.9996992328. Note that the first 3 decimals are identical.

The spelling of 4251525632 in words is "four billion, two hundred fifty-one million, five hundred twenty-five thousand, six hundred thirty-two".