250000005 has 32 divisors (see below), whose sum is σ = 421977600. Its totient is φ = 126038592.

The previous prime is 249999991. The next prime is 250000013. The reversal of 250000005 is 500000052.

It is not a de Polignac number, because 250000005 - 2⁶ = 249999941 is a prime.

It is a congruent 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, 210022 + ... + 211208.

It is an arithmetic number, because the mean of its divisors is an integer number (13186800).

Almost surely, 2^250000005 is an apocalyptic number.

It is an amenable number.

250000005 is a deficient number, since it is larger than the sum of its proper divisors (171977595).

250000005 is a wasteful number, since it uses less digits than its factorization.

250000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953.

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 250000005 is about 15811.3884589558. The cubic root of 250000005 is about 629.9605291472.

Adding to 250000005 its reverse (500000052), we get a palindrome (750000057).

It can be divided in two parts, 25000000 and 5, that multiplied together give a cube (125000000 = 500³).

The spelling of 250000005 in words is "two hundred fifty million, five", and thus it is an aban number.