125587865 has 8 divisors (see below), whose sum is σ = 162298248. Its totient is φ = 92741760.

The previous prime is 125587859. The next prime is 125587871. The reversal of 125587865 is 568785521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125587859) and next prime (125587871).

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 125507209 = 284^2 + 11203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125587865 - 2⁴ = 125587849 is a prime.

It is a Duffinian number.

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, 965996 + ... + 966125.

It is an arithmetic number, because the mean of its divisors is an integer number (20287281).

Almost surely, 2^125587865 is an apocalyptic number.

It is an amenable number.

125587865 is a deficient number, since it is larger than the sum of its proper divisors (36710383).

125587865 is a wasteful number, since it uses less digits than its factorization.

125587865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932139.

The product of its digits is 672000, while the sum is 47.

The square root of 125587865 is about 11206.5991719165. The cubic root of 125587865 is about 500.7825944528.

The spelling of 125587865 in words is "one hundred twenty-five million, five hundred eighty-seven thousand, eight hundred sixty-five".