111725501 has 2 divisors, whose sum is σ = 111725502. Its totient is φ = 111725500.

The previous prime is 111725489. The next prime is 111725503. The reversal of 111725501 is 105527111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 106276 = 10565^2 + 326^2 .

It is an emirp because it is prime and its reverse (105527111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111725501 - 2⁶ = 111725437 is a prime.

Together with 111725503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111725503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55862750 + 55862751.

It is an arithmetic number, because the mean of its divisors is an integer number (55862751).

Almost surely, 2^111725501 is an apocalyptic number.

It is an amenable number.

111725501 is a deficient number, since it is larger than the sum of its proper divisors (1).

111725501 is an equidigital number, since it uses as much as digits as its factorization.

111725501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 111725501 is about 10570.0284294793. The cubic root of 111725501 is about 481.6343320820.

The spelling of 111725501 in words is "one hundred eleven million, seven hundred twenty-five thousand, five hundred one".