125406814319 has 4 divisors (see below), whose sum is σ = 125411395320. Its totient is φ = 125402233320.

The previous prime is 125406814297. The next prime is 125406814339. The reversal of 125406814319 is 913418604521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913418604521 = 5531 ⋅165145291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125406814319 is a prime.

It is a super-2 number, since 2×125406814319² (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 125406814319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125406814339) 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, 2249189 + ... + 2304270.

It is an arithmetic number, because the mean of its divisors is an integer number (31352848830).

Almost surely, 2^125406814319 is an apocalyptic number.

125406814319 is a deficient number, since it is larger than the sum of its proper divisors (4581001).

125406814319 is an equidigital number, since it uses as much as digits as its factorization.

125406814319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581000.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 125406814319 in words is "one hundred twenty-five billion, four hundred six million, eight hundred fourteen thousand, three hundred nineteen".