125402440231 has 8 divisors (see below), whose sum is σ = 128034826640. Its totient is φ = 122794771392.

The previous prime is 125402440213. The next prime is 125402440243. The reversal of 125402440231 is 132044204521.

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

It is a cyclic number.

It is not a de Polignac number, because 125402440231 - 2¹³ = 125402432039 is a prime.

It is a super-2 number, since 2×125402440231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125402440231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125402440201) 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 in 7 ways as a sum of consecutive naturals, for example, 6169140 + ... + 6189433.

It is an arithmetic number, because the mean of its divisors is an integer number (16004353330).

Almost surely, 2^125402440231 is an apocalyptic number.

125402440231 is a deficient number, since it is larger than the sum of its proper divisors (2632386409).

125402440231 is a wasteful number, since it uses less digits than its factorization.

125402440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358785.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 125402440231 its reverse (132044204521), we get a palindrome (257446644752).

The spelling of 125402440231 in words is "one hundred twenty-five billion, four hundred two million, four hundred forty thousand, two hundred thirty-one".