1225892 has 6 divisors (see below), whose sum is σ = 2145318. Its totient is φ = 612944.

The previous prime is 1225891. The next prime is 1225897. The reversal of 1225892 is 2985221.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 440896 = 886^2 + 664^2 .

It is a super-2 number, since 2×1225892² = 3005622391328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153233 + ... + 153240.

It is an arithmetic number, because the mean of its divisors is an integer number (357553).

2^1225892 is an apocalyptic number.

It is an amenable number.

1225892 is a deficient number, since it is larger than the sum of its proper divisors (919426).

1225892 is a wasteful number, since it uses less digits than its factorization.

1225892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306477 (or 306475 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1225892 is about 1107.2000722543. The cubic root of 1225892 is about 107.0247126080.

The spelling of 1225892 in words is "one million, two hundred twenty-five thousand, eight hundred ninety-two".