250120945 has 8 divisors (see below), whose sum is σ = 303117480. Its totient is φ = 198115200.

The previous prime is 250120933. The next prime is 250120961. The reversal of 250120945 is 549021052.

It can be written as a sum of positive squares in 4 ways, for example, as 60590656 + 189530289 = 7784^2 + 13767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 250120945 - 2²¹ = 248023793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247140 + ... + 248149.

It is an arithmetic number, because the mean of its divisors is an integer number (37889685).

Almost surely, 2^250120945 is an apocalyptic number.

It is an amenable number.

250120945 is a deficient number, since it is larger than the sum of its proper divisors (52996535).

250120945 is a wasteful number, since it uses less digits than its factorization.

250120945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495395.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 250120945 is about 15815.2124551016. The cubic root of 250120945 is about 630.0620960041.

Adding to 250120945 its reverse (549021052), we get a palindrome (799141997).

The spelling of 250120945 in words is "two hundred fifty million, one hundred twenty thousand, nine hundred forty-five".