1225371 has 32 divisors (see below), whose sum is σ = 2027520. Its totient is φ = 643104.

The previous prime is 1225361. The next prime is 1225373. The reversal of 1225371 is 1735221.

It is not a de Polignac number, because 1225371 - 2⁹ = 1224859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1225371 is a Rhonda number in base 8.

It is not an unprimeable number, because it can be changed into a prime (1225373) 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 31 ways as a sum of consecutive naturals, for example, 20740 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2^1225371 is an apocalyptic number.

1225371 is a deficient number, since it is larger than the sum of its proper divisors (802149).

1225371 is a wasteful number, since it uses less digits than its factorization.

1225371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135.

The product of its digits is 420, while the sum is 21.

The square root of 1225371 is about 1106.9647690871. The cubic root of 1225371 is about 107.0095487446.

It can be divided in two parts, 1225 and 371, that added together give a triangular number (1596 = T₅₆).

The spelling of 1225371 in words is "one million, two hundred twenty-five thousand, three hundred seventy-one".