100020210120025 has 12 divisors (see below), whose sum is σ = 133565449822252. Its totient is φ = 73861078242240.

The previous prime is 100020210119989. The next prime is 100020210120109. The reversal of 100020210120025 is 520021012020001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 41394052660041 + 58626157459984 = 6433821^2 + 7656772^2 .

It is not a de Polignac number, because 100020210120025 - 2⁷ = 100020210119897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020210119990 and 100020210120008.

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, 153877246014 + ... + 153877246663.

Almost surely, 2^{100020210120025} is an apocalyptic number.

It is an amenable number.

100020210120025 is a deficient number, since it is larger than the sum of its proper divisors (33545239702227).

100020210120025 is a wasteful number, since it uses less digits than its factorization.

100020210120025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307754492700 (or 307754492695 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 100020210120025 its reverse (520021012020001), we get a palindrome (620041222140026).

The spelling of 100020210120025 in words is "one hundred trillion, twenty billion, two hundred ten million, one hundred twenty thousand, twenty-five".