250405430 has 32 divisors (see below), whose sum is σ = 508667040. Its totient is φ = 87915520.

The previous prime is 250405429. The next prime is 250405433. The reversal of 250405430 is 34504052.

250405430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 250405396 and 250405405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250405433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36059 + ... + 42438.

It is an arithmetic number, because the mean of its divisors is an integer number (15895845).

Almost surely, 2^250405430 is an apocalyptic number.

250405430 is an abundant number, since it is smaller than the sum of its proper divisors (258261610).

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

250405430 is a wasteful number, since it uses less digits than its factorization.

250405430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78544.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 250405430 is about 15824.2039294241. The cubic root of 250405430 is about 630.3008808872.

Adding to 250405430 its reverse (34504052), we get a palindrome (284909482).

The spelling of 250405430 in words is "two hundred fifty million, four hundred five thousand, four hundred thirty".