1225304535 has 48 divisors (see below), whose sum is σ = 2456014176. Its totient is φ = 517047552.

The previous prime is 1225304533. The next prime is 1225304579. The reversal of 1225304535 is 5354035221.

It is not a de Polignac number, because 1225304535 - 2¹ = 1225304533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225304533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54564 + ... + 73673.

It is an arithmetic number, because the mean of its divisors is an integer number (51166962).

Almost surely, 2^1225304535 is an apocalyptic number.

1225304535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225304535 is an abundant number, since it is smaller than the sum of its proper divisors (1230709641).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225304535 is a wasteful number, since it uses less digits than its factorization.

1225304535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128272 (or 128265 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1225304535 is about 35004.3502296500. The cubic root of 1225304535 is about 1070.0761395145.

Adding to 1225304535 its reverse (5354035221), we get a palindrome (6579339756).

The spelling of 1225304535 in words is "one billion, two hundred twenty-five million, three hundred four thousand, five hundred thirty-five".