250000000000001 has 4 divisors (see below), whose sum is σ = 250000385897904. Its totient is φ = 249999614102100.

The previous prime is 249999999999977. The next prime is 250000000000043. The reversal of 250000000000001 is 100000000000052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 250000000000001 - 2²² = 249999995805697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 250000000000001.

It is not an unprimeable number, because it can be changed into a prime (250000000000501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191975555 + ... + 193273416.

It is an arithmetic number, because the mean of its divisors is an integer number (62500096474476).

Almost surely, 2^{250000000000001} is an apocalyptic number.

It is an amenable number.

250000000000001 is a deficient number, since it is larger than the sum of its proper divisors (385897903).

250000000000001 is an equidigital number, since it uses as much as digits as its factorization.

250000000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385897902.

The product of its (nonzero) digits is 10, while the sum is 8.

Adding to 250000000000001 its reverse (100000000000052), we get a palindrome (350000000000053).

The spelling of 250000000000001 in words is "two hundred fifty trillion, one", and thus it is an aban number.