1253253240 has 48 divisors (see below), whose sum is σ = 4073074200. Its totient is φ = 334200768.

The previous prime is 1253253227. The next prime is 1253253247. The reversal of 1253253240 is 423523521.

It is a happy number.

1253253240 is a `hidden beast` number, since 12 + 5 + 325 + 324 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253253247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1740270 + ... + 1740989.

Almost surely, 2^1253253240 is an apocalyptic number.

1253253240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253253240 is an abundant number, since it is smaller than the sum of its proper divisors (2819820960).

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

1253253240 is a wasteful number, since it uses less digits than its factorization.

1253253240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481276 (or 3481269 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1253253240 is about 35401.3169246569. The cubic root of 1253253240 is about 1078.1510545436.

Adding to 1253253240 its reverse (423523521), we get a palindrome (1676776761).

The spelling of 1253253240 in words is "one billion, two hundred fifty-three million, two hundred fifty-three thousand, two hundred forty".