125535031 has 2 divisors, whose sum is σ = 125535032. Its totient is φ = 125535030.

The previous prime is 125535023. The next prime is 125535101. The reversal of 125535031 is 130535521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125535031 - 2³ = 125535023 is a prime.

It is a super-2 number, since 2×125535031² = 31518088016341922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125534987 and 125535005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125535001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62767515 + 62767516.

It is an arithmetic number, because the mean of its divisors is an integer number (62767516).

Almost surely, 2^125535031 is an apocalyptic number.

125535031 is a deficient number, since it is larger than the sum of its proper divisors (1).

125535031 is an equidigital number, since it uses as much as digits as its factorization.

125535031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 125535031 is about 11204.2416521601. The cubic root of 125535031 is about 500.7123592732.

The spelling of 125535031 in words is "one hundred twenty-five million, five hundred thirty-five thousand, thirty-one".