10205103421525 has 12 divisors (see below), whose sum is σ = 12654546453892. Its totient is φ = 8163941955840.

The previous prime is 10205103421501. The next prime is 10205103421559. The reversal of 10205103421525 is 52512430150201.

It can be written as a sum of positive squares in 6 ways, for example, as 520024150129 + 9685079271396 = 721127^2 + 3112086^2 .

It is not a de Polignac number, because 10205103421525 - 2¹⁵ = 10205103388757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2028372 + ... + 4952221.

Almost surely, 2^{10205103421525} is an apocalyptic number.

It is an amenable number.

10205103421525 is a deficient number, since it is larger than the sum of its proper divisors (2449443032367).

10205103421525 is an equidigital number, since it uses as much as digits as its factorization.

10205103421525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039080 (or 7039075 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 10205103421525 its reverse (52512430150201), we get a palindrome (62717533571726).

The spelling of 10205103421525 in words is "ten trillion, two hundred five billion, one hundred three million, four hundred twenty-one thousand, five hundred twenty-five".