125787331 has 2 divisors, whose sum is σ = 125787332. Its totient is φ = 125787330.

The previous prime is 125787329. The next prime is 125787401. The reversal of 125787331 is 133787521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125787331 - 2¹ = 125787329 is a prime.

It is a super-2 number, since 2×125787331² = 31644905280207122, which contains 22 as substring.

Together with 125787329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125767331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62893665 + 62893666.

It is an arithmetic number, because the mean of its divisors is an integer number (62893666).

Almost surely, 2^125787331 is an apocalyptic number.

125787331 is a deficient number, since it is larger than the sum of its proper divisors (1).

125787331 is an equidigital number, since it uses as much as digits as its factorization.

125787331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 125787331 is about 11215.4951295072. The cubic root of 125787331 is about 501.0475782933.

It can be divided in two parts, 1257 and 87331, that added together give a palindrome (88588).

The spelling of 125787331 in words is "one hundred twenty-five million, seven hundred eighty-seven thousand, three hundred thirty-one".