125405699219 has 2 divisors, whose sum is σ = 125405699220. Its totient is φ = 125405699218.

The previous prime is 125405699213. The next prime is 125405699233. The reversal of 125405699219 is 912996504521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125405699219 - 2²⁰ = 125404650643 is a prime.

It is a super-2 number, since 2×125405699219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125405699213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62702849609 + 62702849610.

It is an arithmetic number, because the mean of its divisors is an integer number (62702849610).

Almost surely, 2^125405699219 is an apocalyptic number.

125405699219 is a deficient number, since it is larger than the sum of its proper divisors (1).

125405699219 is an equidigital number, since it uses as much as digits as its factorization.

125405699219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 125405699219 in words is "one hundred twenty-five billion, four hundred five million, six hundred ninety-nine thousand, two hundred nineteen".