125535191 has 16 divisors (see below), whose sum is σ = 137839680. Its totient is φ = 113840640.

The previous prime is 125535161. The next prime is 125535197. The reversal of 125535191 is 191535521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125535191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125535197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67646 + ... + 69476.

It is an arithmetic number, because the mean of its divisors is an integer number (8614980).

Almost surely, 2^125535191 is an apocalyptic number.

125535191 is a deficient number, since it is larger than the sum of its proper divisors (12304489).

125535191 is a wasteful number, since it uses less digits than its factorization.

125535191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994.

The product of its digits is 6750, while the sum is 32.

The square root of 125535191 is about 11204.2487923109. The cubic root of 125535191 is about 500.7125719999.

The spelling of 125535191 in words is "one hundred twenty-five million, five hundred thirty-five thousand, one hundred ninety-one".