1250261 has 6 divisors (see below), whose sum is σ = 1292886. Its totient is φ = 1209000.

The previous prime is 1250243. The next prime is 1250273. The reversal of 1250261 is 1620521.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 600625 = 806^2 + 775^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1250261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250201) 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 5 ways as a sum of consecutive naturals, for example, 311 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (215481).

2^1250261 is an apocalyptic number.

It is an amenable number.

1250261 is a deficient number, since it is larger than the sum of its proper divisors (42625).

1250261 is an equidigital number, since it uses as much as digits as its factorization.

1250261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1250261 is about 1118.1507054060. The cubic root of 1250261 is about 107.7292314126.

Adding to 1250261 its reverse (1620521), we get a palindrome (2870782).

The spelling of 1250261 in words is "one million, two hundred fifty thousand, two hundred sixty-one".