125040051431 has 4 divisors (see below), whose sum is σ = 132395348592. Its totient is φ = 117684754272.

The previous prime is 125040051427. The next prime is 125040051443. The reversal of 125040051431 is 134150040521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125040051431 - 2² = 125040051427 is a prime.

It is a super-2 number, since 2×125040051431² (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 125040051431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125040051421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677648555 + ... + 3677648588.

It is an arithmetic number, because the mean of its divisors is an integer number (33098837148).

Almost surely, 2^125040051431 is an apocalyptic number.

125040051431 is a deficient number, since it is larger than the sum of its proper divisors (7355297161).

125040051431 is an equidigital number, since it uses as much as digits as its factorization.

125040051431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7355297160.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 125040051431 its reverse (134150040521), we get a palindrome (259190091952).

The spelling of 125040051431 in words is "one hundred twenty-five billion, forty million, fifty-one thousand, four hundred thirty-one".