1025780616 has 96 divisors (see below), whose sum is σ = 3180178560. Its totient is φ = 292605696.

The previous prime is 1025780557. The next prime is 1025780621. The reversal of 1025780616 is 6160875201.

1025780616 is a `hidden beast` number, since 10 + 25 + 7 + 8 + 0 + 616 = 666.

It is a super-2 number, since 2×1025780616² = 2104451744322678912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413556 + ... + 416028.

It is an arithmetic number, because the mean of its divisors is an integer number (33126860).

Almost surely, 2^1025780616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025780616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590089280).

1025780616 is an abundant number, since it is smaller than the sum of its proper divisors (2154397944).

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

1025780616 is a wasteful number, since it uses less digits than its factorization.

1025780616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1025780616 is about 32027.8100406506. The cubic root of 1025780616 is about 1008.5207296236.

The spelling of 1025780616 in words is "one billion, twenty-five million, seven hundred eighty thousand, six hundred sixteen".