100725938 has 4 divisors (see below), whose sum is σ = 151088910. Its totient is φ = 50362968.

The previous prime is 100725931. The next prime is 100725941. The reversal of 100725938 is 839527001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839527001 = 2309 ⋅363589.

It can be written as a sum of positive squares in only one way, i.e., 85803169 + 14922769 = 9263^2 + 3863^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100725898 and 100725907.

It is not an unprimeable number, because it can be changed into a prime (100725931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25181483 + ... + 25181486.

Almost surely, 2^100725938 is an apocalyptic number.

100725938 is a deficient number, since it is larger than the sum of its proper divisors (50362972).

100725938 is an equidigital number, since it uses as much as digits as its factorization.

100725938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50362971.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 100725938 is about 10036.2312647726. The cubic root of 100725938 is about 465.2793450053.

The spelling of 100725938 in words is "one hundred million, seven hundred twenty-five thousand, nine hundred thirty-eight".