125601031 has 2 divisors, whose sum is σ = 125601032. Its totient is φ = 125601030.

The previous prime is 125601023. The next prime is 125601041. The reversal of 125601031 is 130106521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125601031 - 2³ = 125601023 is a prime.

It is a super-2 number, since 2×125601031² = 31551237976525922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125601011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62800515 + 62800516.

It is an arithmetic number, because the mean of its divisors is an integer number (62800516).

Almost surely, 2^125601031 is an apocalyptic number.

125601031 is a deficient number, since it is larger than the sum of its proper divisors (1).

125601031 is an equidigital number, since it uses as much as digits as its factorization.

125601031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 125601031 is about 11207.1865782631. The cubic root of 125601031 is about 500.8000936840.

Adding to 125601031 its reverse (130106521), we get a palindrome (255707552).

It can be divided in two parts, 125 and 601031, that added together give a triangular number (601156 = T₁₀₉₆).

The spelling of 125601031 in words is "one hundred twenty-five million, six hundred one thousand, thirty-one".