1025785125 has 48 divisors (see below), whose sum is σ = 1853600112. Its totient is φ = 545769600.

The previous prime is 1025785121. The next prime is 1025785127. The reversal of 1025785125 is 5215875201.

1025785125 is a `hidden beast` number, since 10 + 2 + 578 + 51 + 25 = 666.

1025785125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 856967076 + 168818049 = 29274^2 + 12993^2 .

It is not a de Polignac number, because 1025785125 - 2² = 1025785121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1025785125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025785121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 625807 + ... + 627443.

It is an arithmetic number, because the mean of its divisors is an integer number (38616669).

Almost surely, 2^1025785125 is an apocalyptic number.

1025785125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025785125 is a deficient number, since it is larger than the sum of its proper divisors (827814987).

1025785125 is a wasteful number, since it uses less digits than its factorization.

1025785125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 36.

The square root of 1025785125 is about 32027.8804325232. The cubic root of 1025785125 is about 1008.5222073319.

The spelling of 1025785125 in words is "one billion, twenty-five million, seven hundred eighty-five thousand, one hundred twenty-five".