1425800856 has 64 divisors (see below), whose sum is σ = 3707827200. Its totient is φ = 456393600.

The previous prime is 1425800851. The next prime is 1425800867. The reversal of 1425800856 is 6580085241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425800851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90150 + ... + 104778.

It is an arithmetic number, because the mean of its divisors is an integer number (57934800).

Almost surely, 2^1425800856 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 1425800856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853913600).

1425800856 is an abundant number, since it is smaller than the sum of its proper divisors (2282026344).

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

1425800856 is a wasteful number, since it uses less digits than its factorization.

1425800856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14800 (or 14796 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 1425800856 is about 37759.7782832474. The cubic root of 1425800856 is about 1125.5193272414.

The spelling of 1425800856 in words is "one billion, four hundred twenty-five million, eight hundred thousand, eight hundred fifty-six".