125288291 has 4 divisors (see below), whose sum is σ = 130735632. Its totient is φ = 119840952.

The previous prime is 125288287. The next prime is 125288347. The reversal of 125288291 is 192882521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192882521 = 13 ⋅14837117.

It is a cyclic number.

It is not a de Polignac number, because 125288291 - 2² = 125288287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125288231) 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, 2723636 + ... + 2723681.

It is an arithmetic number, because the mean of its divisors is an integer number (32683908).

Almost surely, 2^125288291 is an apocalyptic number.

125288291 is a deficient number, since it is larger than the sum of its proper divisors (5447341).

125288291 is an equidigital number, since it uses as much as digits as its factorization.

125288291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447340.

The product of its digits is 23040, while the sum is 38.

The square root of 125288291 is about 11193.2252277885. The cubic root of 125288291 is about 500.3840928698.

The spelling of 125288291 in words is "one hundred twenty-five million, two hundred eighty-eight thousand, two hundred ninety-one".