1250545 has 4 divisors (see below), whose sum is σ = 1500660. Its totient is φ = 1000432.

The previous prime is 1250527. The next prime is 1250551. The reversal of 1250545 is 5450521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 719104 + 531441 = 848^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250545 - 2¹⁷ = 1119473 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125050 + ... + 125059.

It is an arithmetic number, because the mean of its divisors is an integer number (375165).

2^1250545 is an apocalyptic number.

It is an amenable number.

1250545 is a deficient number, since it is larger than the sum of its proper divisors (250115).

1250545 is an equidigital number, since it uses as much as digits as its factorization.

1250545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250114.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1250545 is about 1118.2776935985. The cubic root of 1250545 is about 107.7373877856.

The spelling of 1250545 in words is "one million, two hundred fifty thousand, five hundred forty-five".