1025812001 has 2 divisors, whose sum is σ = 1025812002. Its totient is φ = 1025812000.

The previous prime is 1025811961. The next prime is 1025812027. The reversal of 1025812001 is 1002185201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 877581376 + 148230625 = 29624^2 + 12175^2 .

It is an emirp because it is prime and its reverse (1002185201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025812001 is a prime.

It is a super-2 number, since 2×1025812001² = 2104580522791248002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1025814001) 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 as a sum of consecutive naturals, namely, 512906000 + 512906001.

It is an arithmetic number, because the mean of its divisors is an integer number (512906001).

Almost surely, 2^1025812001 is an apocalyptic number.

It is an amenable number.

1025812001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025812001 is an equidigital number, since it uses as much as digits as its factorization.

1025812001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1025812001 is about 32028.3000017172. The cubic root of 1025812001 is about 1008.5310151564.

Adding to 1025812001 its reverse (1002185201), we get a palindrome (2027997202).

The spelling of 1025812001 in words is "one billion, twenty-five million, eight hundred twelve thousand, one".