1025256145 has 16 divisors (see below), whose sum is σ = 1310688000. Its totient is φ = 767211264.

The previous prime is 1025256139. The next prime is 1025256161. The reversal of 1025256145 is 5416525201.

1025256145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1025256145 - 2³ = 1025256137 is a prime.

It is a super-2 number, since 2×1025256145² = 2102300325720522050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23145 + ... + 50854.

It is an arithmetic number, because the mean of its divisors is an integer number (81918000).

Almost surely, 2^1025256145 is an apocalyptic number.

It is an amenable number.

1025256145 is a deficient number, since it is larger than the sum of its proper divisors (285431855).

1025256145 is a wasteful number, since it uses less digits than its factorization.

1025256145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74184.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 1025256145 is about 32019.6212501023. The cubic root of 1025256145 is about 1008.3488182552.

The spelling of 1025256145 in words is "one billion, twenty-five million, two hundred fifty-six thousand, one hundred forty-five".