125066591 has 12 divisors (see below), whose sum is σ = 137992248. Its totient is φ = 113259744.

The previous prime is 125066573. The next prime is 125066597. The reversal of 125066591 is 195660521.

It is not a de Polignac number, because 125066591 - 2²² = 120872287 is a prime.

It is a super-2 number, since 2×125066591² = 31283304368722562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125066597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1976 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (11499354).

Almost surely, 2^125066591 is an apocalyptic number.

125066591 is a deficient number, since it is larger than the sum of its proper divisors (12925657).

125066591 is a wasteful number, since it uses less digits than its factorization.

125066591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14042 (or 14029 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 125066591 is about 11183.3175310370. The cubic root of 125066591 is about 500.0887722380.

The spelling of 125066591 in words is "one hundred twenty-five million, sixty-six thousand, five hundred ninety-one".