1025405256 has 32 divisors (see below), whose sum is σ = 2565692640. Its totient is φ = 341511168.

The previous prime is 1025405233. The next prime is 1025405263. The reversal of 1025405256 is 6525045201.

1025405256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11655 + ... + 46761.

It is an arithmetic number, because the mean of its divisors is an integer number (80177895).

Almost surely, 2^1025405256 is an apocalyptic number.

It is an amenable number.

1025405256 is an abundant number, since it is smaller than the sum of its proper divisors (1540287384).

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

1025405256 is a wasteful number, since it uses less digits than its factorization.

1025405256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36333 (or 36329 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1025405256 is about 32021.9495971123. The cubic root of 1025405256 is about 1008.3976998974.

The spelling of 1025405256 in words is "one billion, twenty-five million, four hundred five thousand, two hundred fifty-six".