250640532 has 18 divisors (see below), whose sum is σ = 633563658. Its totient is φ = 83546832.

The previous prime is 250640527. The next prime is 250640561. The reversal of 250640532 is 235046052.

250640532 is a `hidden beast` number, since 250 + 6 + 405 + 3 + 2 = 666.

250640532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 160883856 + 89756676 = 12684^2 + 9474^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 250640496 and 250640505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3481083 + ... + 3481154.

It is an arithmetic number, because the mean of its divisors is an integer number (35197981).

Almost surely, 2^250640532 is an apocalyptic number.

It is an amenable number.

250640532 is an abundant number, since it is smaller than the sum of its proper divisors (382923126).

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

250640532 is a wasteful number, since it uses less digits than its factorization.

250640532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962247 (or 6962242 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 250640532 is about 15831.6307435463. The cubic root of 250640532 is about 630.4980792808.

Adding to 250640532 its reverse (235046052), we get a palindrome (485686584).

The spelling of 250640532 in words is "two hundred fifty million, six hundred forty thousand, five hundred thirty-two".