250725 has 12 divisors (see below), whose sum is σ = 414656. Its totient is φ = 133680.

The previous prime is 250721. The next prime is 250727. The reversal of 250725 is 527052.

It is not a de Polignac number, because 250725 - 2² = 250721 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1597 + ... + 1746.

2²⁵⁰⁷²⁵ is an apocalyptic number.

250725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

250725 is a deficient number, since it is larger than the sum of its proper divisors (163931).

250725 is a wasteful number, since it uses less digits than its factorization.

250725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 250725 is about 500.7244751358. The cubic root of 250725 is about 63.0568899072.

Adding to 250725 its reverse (527052), we get a palindrome (777777).

The spelling of 250725 in words is "two hundred fifty thousand, seven hundred twenty-five".