250123213145 has 32 divisors (see below), whose sum is σ = 344430219168. Its totient is φ = 172733902848.

The previous prime is 250123213127. The next prime is 250123213159. The reversal of 250123213145 is 541312321052.

It can be written as a sum of positive squares in 16 ways, for example, as 66541813849 + 183581399296 = 257957^2 + 428464^2 .

It is a de Polignac number, because none of the positive numbers 2^k-250123213145 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547394 + ... + 894363.

It is an arithmetic number, because the mean of its divisors is an integer number (10763444349).

Almost surely, 2^250123213145 is an apocalyptic number.

It is an amenable number.

250123213145 is a deficient number, since it is larger than the sum of its proper divisors (94307006023).

250123213145 is a wasteful number, since it uses less digits than its factorization.

250123213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441949.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 250123213145 its reverse (541312321052), we get a palindrome (791435534197).

The spelling of 250123213145 in words is "two hundred fifty billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred forty-five".