1253012530 has 64 divisors (see below), whose sum is σ = 2827975680. Its totient is φ = 388324800.

The previous prime is 1253012507. The next prime is 1253012543. The reversal of 1253012530 is 352103521.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133285 + ... + 142375.

It is an arithmetic number, because the mean of its divisors is an integer number (44187120).

Almost surely, 2^1253012530 is an apocalyptic number.

1253012530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253012530 is an abundant number, since it is smaller than the sum of its proper divisors (1574963150).

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

1253012530 is a wasteful number, since it uses less digits than its factorization.

1253012530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1253012530 is about 35397.9170291135. The cubic root of 1253012530 is about 1078.0820239734.

Subtracting from 1253012530 its reverse (352103521), we obtain a palindrome (900909009).

The spelling of 1253012530 in words is "one billion, two hundred fifty-three million, twelve thousand, five hundred thirty".