250005625 has 10 divisors (see below), whose sum is σ = 312407810. Its totient is φ = 200004000.

The previous prime is 250005619. The next prime is 250005649. The reversal of 250005625 is 526500052.

It can be written as a sum of positive squares in 5 ways, for example, as 38390416 + 211615209 = 6196^2 + 14547^2 .

It is not a de Polignac number, because 250005625 - 2²³ = 241617017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

250005625 is a modest number, since divided by 5625 gives 2500 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 250005625.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 199380 + ... + 200629.

It is an arithmetic number, because the mean of its divisors is an integer number (31240781).

Almost surely, 2^250005625 is an apocalyptic number.

250005625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

250005625 is a deficient number, since it is larger than the sum of its proper divisors (62402185).

250005625 is an frugal number, since it uses more digits than its factorization.

250005625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400029 (or 400014 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 250005625 is about 15811.5661779597. The cubic root of 250005625 is about 629.9652496159.

Adding to 250005625 its reverse (526500052), we get a palindrome (776505677).

It can be divided in two parts, 25000 and 5625, that added together give a square (30625 = 175²).

The spelling of 250005625 in words is "two hundred fifty million, five thousand, six hundred twenty-five".