1025017256 has 8 divisors (see below), whose sum is σ = 1921907370. Its totient is φ = 512508624.

The previous prime is 1025017247. The next prime is 1025017277. The reversal of 1025017256 is 6527105201.

It can be written as a sum of positive squares in only one way, i.e., 520296100 + 504721156 = 22810^2 + 22466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1025017256³ (a number of 28 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 64063571 + ... + 64063586.

Almost surely, 2^1025017256 is an apocalyptic number.

It is an amenable number.

1025017256 is a deficient number, since it is larger than the sum of its proper divisors (896890114).

1025017256 is a wasteful number, since it uses less digits than its factorization.

1025017256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128127163 (or 128127159 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1025017256 is about 32015.8906794735. The cubic root of 1025017256 is about 1008.2704956645.

The spelling of 1025017256 in words is "one billion, twenty-five million, seventeen thousand, two hundred fifty-six".