1243225501 has 12 divisors (see below), whose sum is σ = 1457248320. Its totient is φ = 1057481880.

The previous prime is 1243225483. The next prime is 1243225507. The reversal of 1243225501 is 1055223421.

It is not a de Polignac number, because 1243225501 - 2¹³ = 1243217309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243225507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90421 + ... + 103258.

It is an arithmetic number, because the mean of its divisors is an integer number (121437360).

Almost surely, 2^1243225501 is an apocalyptic number.

It is an amenable number.

1243225501 is a deficient number, since it is larger than the sum of its proper divisors (214022819).

1243225501 is a wasteful number, since it uses less digits than its factorization.

1243225501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193824 (or 193817 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1243225501 is about 35259.4030153660. The cubic root of 1243225501 is about 1075.2677900735.

Adding to 1243225501 its reverse (1055223421), we get a palindrome (2298448922).

The spelling of 1243225501 in words is "one billion, two hundred forty-three million, two hundred twenty-five thousand, five hundred one".