1223003525 has 6 divisors (see below), whose sum is σ = 1516524402. Its totient is φ = 978402800.

The previous prime is 1223003519. The next prime is 1223003539. The reversal of 1223003525 is 5253003221.

It can be written as a sum of positive squares in 3 ways, for example, as 17455684 + 1205547841 = 4178^2 + 34721^2 .

It is not a de Polignac number, because 1223003525 - 2²⁴ = 1206226309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223003525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24460046 + ... + 24460095.

It is an arithmetic number, because the mean of its divisors is an integer number (252754067).

Almost surely, 2^1223003525 is an apocalyptic number.

It is an amenable number.

1223003525 is a deficient number, since it is larger than the sum of its proper divisors (293520877).

1223003525 is an equidigital number, since it uses as much as digits as its factorization.

1223003525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48920151 (or 48920146 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 1223003525 is about 34971.4672983562. The cubic root of 1223003525 is about 1069.4058846963.

Adding to 1223003525 its reverse (5253003221), we get a palindrome (6476006746).

The spelling of 1223003525 in words is "one billion, two hundred twenty-three million, three thousand, five hundred twenty-five".