1200425616 has 80 divisors (see below), whose sum is σ = 3710734720. Its totient is φ = 369360000.

The previous prime is 1200425609. The next prime is 1200425663. The reversal of 1200425616 is 6165240021.

1200425616 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 42 + 5 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1200425616.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101260 + ... + 112491.

It is an arithmetic number, because the mean of its divisors is an integer number (46384184).

Almost surely, 2^1200425616 is an apocalyptic number.

1200425616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1200425616 is an abundant number, since it is smaller than the sum of its proper divisors (2510309104).

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

1200425616 is a wasteful number, since it uses less digits than its factorization.

1200425616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213781 (or 213769 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1200425616 is about 34647.1588445575. The cubic root of 1200425616 is about 1062.7841889126.

Adding to 1200425616 its reverse (6165240021), we get a palindrome (7365665637).

The spelling of 1200425616 in words is "one billion, two hundred million, four hundred twenty-five thousand, six hundred sixteen".