1020250001 has 4 divisors (see below), whose sum is σ = 1023933492. Its totient is φ = 1016566512.

The previous prime is 1020249983. The next prime is 1020250039. The reversal of 1020250001 is 1000520201.

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 689010001 + 331240000 = 26249^2 + 18200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020250001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020250051) 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, 1841330 + ... + 1841883.

It is an arithmetic number, because the mean of its divisors is an integer number (255983373).

Almost surely, 2^1020250001 is an apocalyptic number.

It is an amenable number.

1020250001 is a deficient number, since it is larger than the sum of its proper divisors (3683491).

1020250001 is an equidigital number, since it uses as much as digits as its factorization.

1020250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683490.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1020250001 is about 31941.3525230226. The cubic root of 1020250001 is about 1006.7049435884.

Adding to 1020250001 its reverse (1000520201), we get a palindrome (2020770202).

The spelling of 1020250001 in words is "one billion, twenty million, two hundred fifty thousand, one".