125807837 has 4 divisors (see below), whose sum is σ = 133208316. Its totient is φ = 118407360.

The previous prime is 125807833. The next prime is 125807839. The reversal of 125807837 is 738708521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40780996 + 85026841 = 6386^2 + 9221^2 .

It is a cyclic number.

It is not a de Polignac number, because 125807837 - 2² = 125807833 is a prime.

It is a super-2 number, since 2×125807837² = 31655223701237138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125807794 and 125807803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125807833) 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, 3700214 + ... + 3700247.

It is an arithmetic number, because the mean of its divisors is an integer number (33302079).

Almost surely, 2^125807837 is an apocalyptic number.

125807837 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125807837 is a deficient number, since it is larger than the sum of its proper divisors (7400479).

125807837 is an equidigital number, since it uses as much as digits as its factorization.

125807837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400478.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 125807837 is about 11216.4092739165. The cubic root of 125807837 is about 501.0748039375.

The spelling of 125807837 in words is "one hundred twenty-five million, eight hundred seven thousand, eight hundred thirty-seven".