1225957 has 8 divisors (see below), whose sum is σ = 1285632. Its totient is φ = 1167600.

The previous prime is 1225949. The next prime is 1225963. The reversal of 1225957 is 7595221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225957 - 2³ = 1225949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 1 + 2⁵ + 2²⁰ + 5² + 9⁵ + 5⁴ + 7⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225907) 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 7 ways as a sum of consecutive naturals, for example, 1923 + ... + 2479.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

2^1225957 is an apocalyptic number.

It is an amenable number.

1225957 is a deficient number, since it is larger than the sum of its proper divisors (59675).

1225957 is an equidigital number, since it uses as much as digits as its factorization.

1225957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its digits is 6300, while the sum is 31.

The square root of 1225957 is about 1107.2294251870. The cubic root of 1225957 is about 107.0266041513.

The spelling of 1225957 in words is "one million, two hundred twenty-five thousand, nine hundred fifty-seven".