1025085022105 has 4 divisors (see below), whose sum is σ = 1230102026532. Its totient is φ = 820068017680.

The previous prime is 1025085022097. The next prime is 1025085022109. The reversal of 1025085022105 is 5012205805201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379016303449 + 646068718656 = 615643^2 + 803784^2 .

It is not a de Polignac number, because 1025085022105 - 2³ = 1025085022097 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025085022109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102508502206 + ... + 102508502215.

It is an arithmetic number, because the mean of its divisors is an integer number (307525506633).

Almost surely, 2^{1025085022105} is an apocalyptic number.

It is an amenable number.

1025085022105 is a deficient number, since it is larger than the sum of its proper divisors (205017004427).

1025085022105 is an equidigital number, since it uses as much as digits as its factorization.

1025085022105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205017004426.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 1025085022105 in words is "one trillion, twenty-five billion, eighty-five million, twenty-two thousand, one hundred five".