1025061385 has 8 divisors (see below), whose sum is σ = 1250239176. Its totient is φ = 806605440.

The previous prime is 1025061383. The next prime is 1025061439. The reversal of 1025061385 is 5831605201.

It can be written as a sum of positive squares in 4 ways, for example, as 75620416 + 949440969 = 8696^2 + 30813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025061385 - 2¹ = 1025061383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025061383) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1680124 + ... + 1680733.

It is an arithmetic number, because the mean of its divisors is an integer number (156279897).

Almost surely, 2^1025061385 is an apocalyptic number.

It is an amenable number.

1025061385 is a deficient number, since it is larger than the sum of its proper divisors (225177791).

1025061385 is an equidigital number, since it uses as much as digits as its factorization.

1025061385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360923.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1025061385 is about 32016.5798454488. The cubic root of 1025061385 is about 1008.2849647966.

Adding to 1025061385 its reverse (5831605201), we get a palindrome (6856666586).

The spelling of 1025061385 in words is "one billion, twenty-five million, sixty-one thousand, three hundred eighty-five".