125720026431 has 8 divisors (see below), whose sum is σ = 168477599664. Its totient is φ = 83387902080.

The previous prime is 125720026409. The next prime is 125720026447. The reversal of 125720026431 is 134620027521.

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

It is a de Polignac number, because none of the positive numbers 2^k-125720026431 is a prime.

It is a super-2 number, since 2×125720026431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125720026392 and 125720026401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125720028431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106361530 + ... + 106362711.

It is an arithmetic number, because the mean of its divisors is an integer number (21059699958).

Almost surely, 2^125720026431 is an apocalyptic number.

125720026431 is a deficient number, since it is larger than the sum of its proper divisors (42757573233).

125720026431 is a wasteful number, since it uses less digits than its factorization.

125720026431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212724441.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 125720026431 in words is "one hundred twenty-five billion, seven hundred twenty million, twenty-six thousand, four hundred thirty-one".