125787831 has 8 divisors (see below), whose sum is σ = 180618480. Its totient is φ = 77407872.

The previous prime is 125787821. The next prime is 125787881. The reversal of 125787831 is 138787521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125787831 - 2¹⁰ = 125786807 is a prime.

It is a super-2 number, since 2×125787831² = 31645156855369122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125787821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612626 + ... + 1612703.

It is an arithmetic number, because the mean of its divisors is an integer number (22577310).

Almost surely, 2^125787831 is an apocalyptic number.

125787831 is a deficient number, since it is larger than the sum of its proper divisors (54830649).

125787831 is a wasteful number, since it uses less digits than its factorization.

125787831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225345.

The product of its digits is 94080, while the sum is 42.

The square root of 125787831 is about 11215.5174200747. The cubic root of 125787831 is about 501.0482421743.

The spelling of 125787831 in words is "one hundred twenty-five million, seven hundred eighty-seven thousand, eight hundred thirty-one".