1253005245 has 12 divisors (see below), whose sum is σ = 2171875836. Its totient is φ = 668269440.

The previous prime is 1253005211. The next prime is 1253005253. The reversal of 1253005245 is 5425003521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 149303961 + 1103701284 = 12219^2 + 33222^2 .

It is not a de Polignac number, because 1253005245 - 2¹⁷ = 1252874173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13922236 + ... + 13922325.

It is an arithmetic number, because the mean of its divisors is an integer number (180989653).

Almost surely, 2^1253005245 is an apocalyptic number.

1253005245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253005245 is a deficient number, since it is larger than the sum of its proper divisors (918870591).

1253005245 is a wasteful number, since it uses less digits than its factorization.

1253005245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27844572 (or 27844569 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1253005245 is about 35397.8141274288. The cubic root of 1253005245 is about 1078.0799346506.

Adding to 1253005245 its reverse (5425003521), we get a palindrome (6678008766).

The spelling of 1253005245 in words is "one billion, two hundred fifty-three million, five thousand, two hundred forty-five".