250420555 has 32 divisors (see below), whose sum is σ = 380832768. Its totient is φ = 153532800.

The previous prime is 250420549. The next prime is 250420561. The reversal of 250420555 is 555024052.

It is an interprime number because it is at equal distance from previous prime (250420549) and next prime (250420561).

It is not a de Polignac number, because 250420555 - 2¹¹ = 250418507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18154 + ... + 28816.

It is an arithmetic number, because the mean of its divisors is an integer number (11901024).

Almost surely, 2^250420555 is an apocalyptic number.

250420555 is a deficient number, since it is larger than the sum of its proper divisors (130412213).

250420555 is a wasteful number, since it uses less digits than its factorization.

250420555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 250420555 is about 15824.6818293449. The cubic root of 250420555 is about 630.3135711190.

The spelling of 250420555 in words is "two hundred fifty million, four hundred twenty thousand, five hundred fifty-five".