1025004456 has 160 divisors (see below), whose sum is σ = 3319272000. Its totient is φ = 289453824.

The previous prime is 1025004389. The next prime is 1025004479. The reversal of 1025004456 is 6544005201.

1025004456 is a `hidden beast` number, since 102 + 500 + 4 + 4 + 56 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 402435 + ... + 404973.

It is an arithmetic number, because the mean of its divisors is an integer number (20745450).

Almost surely, 2^1025004456 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 1025004456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659636000).

1025004456 is an abundant number, since it is smaller than the sum of its proper divisors (2294267544).

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

1025004456 is a wasteful number, since it uses less digits than its factorization.

1025004456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1025004456 is about 32015.6907781169. The cubic root of 1025004456 is about 1008.2662986892.

Adding to 1025004456 its reverse (6544005201), we get a palindrome (7569009657).

The spelling of 1025004456 in words is "one billion, twenty-five million, four thousand, four hundred fifty-six".