1225528 has 8 divisors (see below), whose sum is σ = 2297880. Its totient is φ = 612760.

The previous prime is 1225517. The next prime is 1225529. The reversal of 1225528 is 8255221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76588 + ... + 76603.

It is an arithmetic number, because the mean of its divisors is an integer number (287235).

2^1225528 is an apocalyptic number.

It is an amenable number.

1225528 is a deficient number, since it is larger than the sum of its proper divisors (1072352).

1225528 is a wasteful number, since it uses less digits than its factorization.

1225528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153197 (or 153193 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 1225528 is about 1107.0356814484. The cubic root of 1225528 is about 107.0141187297.

The spelling of 1225528 in words is "one million, two hundred twenty-five thousand, five hundred twenty-eight".