125137271 has 4 divisors (see below), whose sum is σ = 143014032. Its totient is φ = 107260512.

The previous prime is 125137261. The next prime is 125137277. The reversal of 125137271 is 172731521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172731521 = 233 ⋅741337.

It is a cyclic number.

It is not a de Polignac number, because 125137271 - 2²² = 120942967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125137277) 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, 8938370 + ... + 8938383.

It is an arithmetic number, because the mean of its divisors is an integer number (35753508).

Almost surely, 2^125137271 is an apocalyptic number.

125137271 is a deficient number, since it is larger than the sum of its proper divisors (17876761).

125137271 is an equidigital number, since it uses as much as digits as its factorization.

125137271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17876760.

The product of its digits is 2940, while the sum is 29.

The square root of 125137271 is about 11186.4771487721. The cubic root of 125137271 is about 500.1829610423.

Adding to 125137271 its reverse (172731521), we get a palindrome (297868792).

The spelling of 125137271 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, two hundred seventy-one".