1223050525 has 24 divisors (see below), whose sum is σ = 1549588320. Its totient is φ = 957253440.

The previous prime is 1223050519. The next prime is 1223050529. The reversal of 1223050525 is 5250503221.

It is a happy number.

It is not a de Polignac number, because 1223050525 - 2⁹ = 1223050013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1223050525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223050529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554074 + ... + 556276.

It is an arithmetic number, because the mean of its divisors is an integer number (64566180).

Almost surely, 2^1223050525 is an apocalyptic number.

It is an amenable number.

1223050525 is a deficient number, since it is larger than the sum of its proper divisors (326537795).

1223050525 is a wasteful number, since it uses less digits than its factorization.

1223050525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1223050525 is about 34972.1392682804. The cubic root of 1223050525 is about 1069.4195836028.

Adding to 1223050525 its reverse (5250503221), we get a palindrome (6473553746).

The spelling of 1223050525 in words is "one billion, two hundred twenty-three million, fifty thousand, five hundred twenty-five".