250855438428 has 576 divisors, whose sum is σ = 828084096000. Its totient is φ = 64075608576.

The previous prime is 250855438417. The next prime is 250855438429. The reversal of 250855438428 is 824834558052.

250855438428 is a `hidden beast` number, since 2 + 5 + 0 + 8 + 554 + 3 + 84 + 2 + 8 = 666.

It is a super-2 number, since 2×250855438428² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250855438429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1450031350 + ... + 1450031522.

It is an arithmetic number, because the mean of its divisors is an integer number (1437646000).

Almost surely, 2^250855438428 is an apocalyptic number.

250855438428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250855438428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414042048000).

250855438428 is an abundant number, since it is smaller than the sum of its proper divisors (577228657572).

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

250855438428 is a wasteful number, since it uses less digits than its factorization.

250855438428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 12288000, while the sum is 54.

The spelling of 250855438428 in words is "two hundred fifty billion, eight hundred fifty-five million, four hundred thirty-eight thousand, four hundred twenty-eight".