125007091 has 4 divisors (see below), whose sum is σ = 136371384. Its totient is φ = 113642800.

The previous prime is 125007089. The next prime is 125007121. The reversal of 125007091 is 190700521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125007091 - 2¹ = 125007089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125007191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5682130 + ... + 5682151.

It is an arithmetic number, because the mean of its divisors is an integer number (34092846).

Almost surely, 2^125007091 is an apocalyptic number.

125007091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125007091 is a deficient number, since it is larger than the sum of its proper divisors (11364293).

125007091 is a wasteful number, since it uses less digits than its factorization.

125007091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364292.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 125007091 is about 11180.6570021623. The cubic root of 125007091 is about 500.0094544879.

It can be divided in two parts, 12500 and 7091, that added together give a palindrome (19591).

The spelling of 125007091 in words is "one hundred twenty-five million, seven thousand, ninety-one".