125587117 has 2 divisors, whose sum is σ = 125587118. Its totient is φ = 125587116.

The previous prime is 125587103. The next prime is 125587123. The reversal of 125587117 is 711785521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104325796 + 21261321 = 10214^2 + 4611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125587117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125587717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62793558 + 62793559.

It is an arithmetic number, because the mean of its divisors is an integer number (62793559).

Almost surely, 2^125587117 is an apocalyptic number.

It is an amenable number.

125587117 is a deficient number, since it is larger than the sum of its proper divisors (1).

125587117 is an equidigital number, since it uses as much as digits as its factorization.

125587117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19600, while the sum is 37.

The square root of 125587117 is about 11206.5657986736. The cubic root of 125587117 is about 500.7816002322.

The spelling of 125587117 in words is "one hundred twenty-five million, five hundred eighty-seven thousand, one hundred seventeen".