125413993 has 4 divisors (see below), whose sum is σ = 126183568. Its totient is φ = 124644420.

The previous prime is 125413991. The next prime is 125414021. The reversal of 125413993 is 399314521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399314521 = 257 ⋅1553753.

It is a cyclic number.

It is not a de Polignac number, because 125413993 - 2¹ = 125413991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125413991) 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, 384543 + ... + 384868.

It is an arithmetic number, because the mean of its divisors is an integer number (31545892).

Almost surely, 2^125413993 is an apocalyptic number.

It is an amenable number.

125413993 is a deficient number, since it is larger than the sum of its proper divisors (769575).

125413993 is an equidigital number, since it uses as much as digits as its factorization.

125413993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769574.

The product of its digits is 29160, while the sum is 37.

The square root of 125413993 is about 11198.8389130302. The cubic root of 125413993 is about 500.5513823981.

The spelling of 125413993 in words is "one hundred twenty-five million, four hundred thirteen thousand, nine hundred ninety-three".