1252112500 has 36 divisors (see below), whose sum is σ = 2738848140. Its totient is φ = 500840000.

The previous prime is 1252112471. The next prime is 1252112507. The reversal of 1252112500 is 52112521.

It can be written as a sum of positive squares in 6 ways, for example, as 1242139536 + 9972964 = 35244^2 + 3158^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252112507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37585 + ... + 62584.

It is an arithmetic number, because the mean of its divisors is an integer number (76079115).

Almost surely, 2^1252112500 is an apocalyptic number.

1252112500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252112500 is an abundant number, since it is smaller than the sum of its proper divisors (1486735640).

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

1252112500 is an equidigital number, since it uses as much as digits as its factorization.

1252112500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100198 (or 100176 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1252112500 is about 35385.2017091891. The cubic root of 1252112500 is about 1077.8238359253.

It can be divided in two parts, 125 and 2112500, that multiplied together give a square (264062500 = 16250²).

The spelling of 1252112500 in words is "one billion, two hundred fifty-two million, one hundred twelve thousand, five hundred".