1025385975 has 18 divisors (see below), whose sum is σ = 1836580616. Its totient is φ = 546872400.

The previous prime is 1025385967. The next prime is 1025385989. The reversal of 1025385975 is 5795835201.

1025385975 is a `hidden beast` number, since 1 + 0 + 2 + 53 + 8 + 597 + 5 = 666.

It is not a de Polignac number, because 1025385975 - 2³ = 1025385967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025385975.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2278411 + ... + 2278860.

Almost surely, 2^1025385975 is an apocalyptic number.

1025385975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1025385975 is a deficient number, since it is larger than the sum of its proper divisors (811194641).

1025385975 is a wasteful number, since it uses less digits than its factorization.

1025385975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557287 (or 4557279 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 1025385975 is about 32021.6485365760. The cubic root of 1025385975 is about 1008.3913794571.

The spelling of 1025385975 in words is "one billion, twenty-five million, three hundred eighty-five thousand, nine hundred seventy-five".