1005050020825 has 6 divisors (see below), whose sum is σ = 1246262025854. Its totient is φ = 804040016640.

The previous prime is 1005050020811. The next prime is 1005050020867. The reversal of 1005050020825 is 5280200505001.

It can be written as a sum of positive squares in 3 ways, for example, as 62576023104 + 942473997721 = 250152^2 + 970811^2 .

It is not a de Polignac number, because 1005050020825 - 2⁷ = 1005050020697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005050020793 and 1005050020802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20101000392 + ... + 20101000441.

Almost surely, 2^{1005050020825} is an apocalyptic number.

It is an amenable number.

1005050020825 is a deficient number, since it is larger than the sum of its proper divisors (241212005029).

1005050020825 is an equidigital number, since it uses as much as digits as its factorization.

1005050020825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40202000843 (or 40202000838 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 1005050020825 its reverse (5280200505001), we get a palindrome (6285250525826).

The spelling of 1005050020825 in words is "one trillion, five billion, fifty million, twenty thousand, eight hundred twenty-five".