125391038291 has 4 divisors (see below), whose sum is σ = 127756906992. Its totient is φ = 123025169592.

The previous prime is 125391038249. The next prime is 125391038299. The reversal of 125391038291 is 192830193521.

It is a happy number.

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 125391038291 - 2¹⁴ = 125391021907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125391038299) 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, 1182934271 + ... + 1182934376.

It is an arithmetic number, because the mean of its divisors is an integer number (31939226748).

Almost surely, 2^125391038291 is an apocalyptic number.

125391038291 is a deficient number, since it is larger than the sum of its proper divisors (2365868701).

125391038291 is an equidigital number, since it uses as much as digits as its factorization.

125391038291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365868700.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 125391038291 in words is "one hundred twenty-five billion, three hundred ninety-one million, thirty-eight thousand, two hundred ninety-one".