125656031543 has 12 divisors (see below), whose sum is σ = 146357079192. Its totient is φ = 107568281520.

The previous prime is 125656031533. The next prime is 125656031551. The reversal of 125656031543 is 345130656521.

It is not a de Polignac number, because 125656031543 - 2⁸ = 125656031287 is a prime.

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 125656031543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125656031533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1590668 + ... + 1667793.

It is an arithmetic number, because the mean of its divisors is an integer number (12196423266).

Almost surely, 2^125656031543 is an apocalyptic number.

125656031543 is a deficient number, since it is larger than the sum of its proper divisors (20701047649).

125656031543 is an equidigital number, since it uses as much as digits as its factorization.

125656031543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259262 (or 3259255 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 125656031543 in words is "one hundred twenty-five billion, six hundred fifty-six million, thirty-one thousand, five hundred forty-three".