125596691 has 4 divisors (see below), whose sum is σ = 137014584. Its totient is φ = 114178800.

The previous prime is 125596673. The next prime is 125596693. The reversal of 125596691 is 196695521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196695521 = 11 ⋅17881411.

It is a cyclic number.

It is not a de Polignac number, because 125596691 - 2¹⁴ = 125580307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125596693) 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, 5708930 + ... + 5708951.

It is an arithmetic number, because the mean of its divisors is an integer number (34253646).

Almost surely, 2^125596691 is an apocalyptic number.

125596691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125596691 is a deficient number, since it is larger than the sum of its proper divisors (11417893).

125596691 is a wasteful number, since it uses less digits than its factorization.

125596691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11417892.

The product of its digits is 145800, while the sum is 44.

The square root of 125596691 is about 11206.9929508321. The cubic root of 125596691 is about 500.7943254260.

The spelling of 125596691 in words is "one hundred twenty-five million, five hundred ninety-six thousand, six hundred ninety-one".