1252631500 has 24 divisors (see below), whose sum is σ = 2735748288. Its totient is φ = 501052400.

The previous prime is 1252631491. The next prime is 1252631507. The reversal of 1252631500 is 51362521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1252631507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252132 + ... + 1253131.

It is an arithmetic number, because the mean of its divisors is an integer number (113989512).

Almost surely, 2^1252631500 is an apocalyptic number.

1252631500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252631500 is an abundant number, since it is smaller than the sum of its proper divisors (1483116788).

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

1252631500 is a wasteful number, since it uses less digits than its factorization.

1252631500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505282 (or 2505270 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1252631500 is about 35392.5345235404. The cubic root of 1252631500 is about 1077.9727344999.

The spelling of 1252631500 in words is "one billion, two hundred fifty-two million, six hundred thirty-one thousand, five hundred".