100561003625 has 8 divisors (see below), whose sum is σ = 125500132680. Its totient is φ = 80448802800.

The previous prime is 100561003583. The next prime is 100561003649. The reversal of 100561003625 is 526300165001.

It can be written as a sum of positive squares in 4 ways, for example, as 15121129024 + 85439874601 = 122968^2 + 292301^2 .

It is not a de Polignac number, because 100561003625 - 2⁸ = 100561003369 is a prime.

It is a super-2 number, since 2×100561003625² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402243890 + ... + 402244139.

It is an arithmetic number, because the mean of its divisors is an integer number (15687516585).

Almost surely, 2^100561003625 is an apocalyptic number.

It is an amenable number.

100561003625 is a deficient number, since it is larger than the sum of its proper divisors (24939129055).

100561003625 is an frugal number, since it uses more digits than its factorization.

100561003625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804488044 (or 804488034 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 100561003625 its reverse (526300165001), we get a palindrome (626861168626).

The spelling of 100561003625 in words is "one hundred billion, five hundred sixty-one million, three thousand, six hundred twenty-five".