1253013000 has 64 divisors (see below), whose sum is σ = 3909409920. Its totient is φ = 334136000.

The previous prime is 1253012993. The next prime is 1253013019. The reversal of 1253013000 is 3103521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205836 + ... + 211835.

It is an arithmetic number, because the mean of its divisors is an integer number (61084530).

Almost surely, 2^1253013000 is an apocalyptic number.

1253013000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253013000 is an abundant number, since it is smaller than the sum of its proper divisors (2656396920).

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

1253013000 is a wasteful number, since it uses less digits than its factorization.

1253013000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417695 (or 417681 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1253013000 is about 35397.9236679215. The cubic root of 1253013000 is about 1078.0821587681.

Adding to 1253013000 its reverse (3103521), we get a palindrome (1256116521).

The spelling of 1253013000 in words is "one billion, two hundred fifty-three million, thirteen thousand".