125038391 has 2 divisors, whose sum is σ = 125038392. Its totient is φ = 125038390.

The previous prime is 125038379. The next prime is 125038409. The reversal of 125038391 is 193830521.

It is a weak prime.

It is an emirp because it is prime and its reverse (193830521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125038391 - 2²⁶ = 57929527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125038091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62519195 + 62519196.

It is an arithmetic number, because the mean of its divisors is an integer number (62519196).

Almost surely, 2^125038391 is an apocalyptic number.

125038391 is a deficient number, since it is larger than the sum of its proper divisors (1).

125038391 is an equidigital number, since it uses as much as digits as its factorization.

125038391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 125038391 is about 11182.0566534068. The cubic root of 125038391 is about 500.0511827605.

The spelling of 125038391 in words is "one hundred twenty-five million, thirty-eight thousand, three hundred ninety-one".