1252205000 has 40 divisors (see below), whose sum is σ = 2933928030. Its totient is φ = 500880000.

The previous prime is 1252204997. The next prime is 1252205033. The reversal of 1252205000 is 5022521.

It can be written as a sum of positive squares in 5 ways, for example, as 246427204 + 1005777796 = 15698^2 + 31714^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1252205000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 120221 + ... + 130220.

Almost surely, 2^1252205000 is an apocalyptic number.

1252205000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252205000 is an abundant number, since it is smaller than the sum of its proper divisors (1681723030).

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

1252205000 is an equidigital number, since it uses as much as digits as its factorization.

1252205000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250467 (or 250448 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1252205000 is about 35386.5087286101. The cubic root of 1252205000 is about 1077.8503767379.

Adding to 1252205000 its reverse (5022521), we get a palindrome (1257227521).

The spelling of 1252205000 in words is "one billion, two hundred fifty-two million, two hundred five thousand".