125837280431 has 4 divisors (see below), whose sum is σ = 126391629912. Its totient is φ = 125282930952.

The previous prime is 125837280427. The next prime is 125837280433. The reversal of 125837280431 is 134082738521.

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 125837280431 - 2² = 125837280427 is a prime.

It is a super-2 number, since 2×125837280431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125837280433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277174400 + ... + 277174853.

It is an arithmetic number, because the mean of its divisors is an integer number (31597907478).

Almost surely, 2^125837280431 is an apocalyptic number.

125837280431 is a deficient number, since it is larger than the sum of its proper divisors (554349481).

125837280431 is an equidigital number, since it uses as much as digits as its factorization.

125837280431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554349480.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 125837280431 in words is "one hundred twenty-five billion, eight hundred thirty-seven million, two hundred eighty thousand, four hundred thirty-one".