1245025200 has 120 divisors (see below), whose sum is σ = 4015227136. Its totient is φ = 329760000.

The previous prime is 1245025181. The next prime is 1245025207. The reversal of 1245025200 is 25205421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (1245025207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177765 + ... + 184635.

Almost surely, 2^1245025200 is an apocalyptic number.

1245025200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245025200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007613568).

1245025200 is an abundant number, since it is smaller than the sum of its proper divisors (2770201936).

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

1245025200 is a wasteful number, since it uses less digits than its factorization.

1245025200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7043 (or 7032 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1245025200 is about 35284.9146236745. The cubic root of 1245025200 is about 1075.7863941224.

The spelling of 1245025200 in words is "one billion, two hundred forty-five million, twenty-five thousand, two hundred".