125533791 has 24 divisors (see below), whose sum is σ = 186108624. Its totient is φ = 81509760.

The previous prime is 125533789. The next prime is 125533823. The reversal of 125533791 is 197335521.

125533791 is a `hidden beast` number, since 12 + 553 + 3 + 7 + 91 = 666.

It is not a de Polignac number, because 125533791 - 2¹ = 125533789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125533591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57675 + ... + 59811.

It is an arithmetic number, because the mean of its divisors is an integer number (7754526).

Almost surely, 2^125533791 is an apocalyptic number.

125533791 is a deficient number, since it is larger than the sum of its proper divisors (60574833).

125533791 is a wasteful number, since it uses less digits than its factorization.

125533791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2308 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 125533791 is about 11204.1863158375. The cubic root of 125533791 is about 500.7107106355.

The spelling of 125533791 in words is "one hundred twenty-five million, five hundred thirty-three thousand, seven hundred ninety-one".