250000001 has 6 divisors (see below), whose sum is σ = 256248006. Its totient is φ = 243900800.

The previous prime is 249999991. The next prime is 250000013. The reversal of 250000001 is 100000052.

250000001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 44823025 + 205176976 = 6695^2 + 14324^2 .

It is not a de Polignac number, because 250000001 - 2¹⁰ = 249998977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250000801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72680 + ... + 76041.

It is an arithmetic number, because the mean of its divisors is an integer number (42708001).

Almost surely, 2^250000001 is an apocalyptic number.

It is an amenable number.

250000001 is a deficient number, since it is larger than the sum of its proper divisors (6248005).

250000001 is an equidigital number, since it uses as much as digits as its factorization.

250000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148803 (or 148762 counting only the distinct ones).

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

The square root of 250000001 is about 15811.3883324647. The cubic root of 250000001 is about 629.9605257874.

Adding to 250000001 its reverse (100000052), we get a palindrome (350000053).

The spelling of 250000001 in words is "two hundred fifty million, one", and thus it is an aban number.