100725887 has 2 divisors, whose sum is σ = 100725888. Its totient is φ = 100725886.

The previous prime is 100725881. The next prime is 100725931. The reversal of 100725887 is 788527001.

It is a weak prime.

It is an emirp because it is prime and its reverse (788527001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100725887 - 2⁴ = 100725871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100725887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100725881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50362943 + 50362944.

It is an arithmetic number, because the mean of its divisors is an integer number (50362944).

Almost surely, 2^100725887 is an apocalyptic number.

100725887 is a deficient number, since it is larger than the sum of its proper divisors (1).

100725887 is an equidigital number, since it uses as much as digits as its factorization.

100725887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 100725887 is about 10036.2287239779. The cubic root of 100725887 is about 465.2792664778.

The spelling of 100725887 in words is "one hundred million, seven hundred twenty-five thousand, eight hundred eighty-seven".