125551554043 has 2 divisors, whose sum is σ = 125551554044. Its totient is φ = 125551554042.

The previous prime is 125551553927. The next prime is 125551554047. The reversal of 125551554043 is 340455155521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125551554043 - 2²¹ = 125549456891 is a prime.

It is a super-2 number, since 2×125551554043² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125551553987 and 125551554005.

It is not a weakly prime, because it can be changed into another prime (125551554047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62775777021 + 62775777022.

It is an arithmetic number, because the mean of its divisors is an integer number (62775777022).

Almost surely, 2^125551554043 is an apocalyptic number.

125551554043 is a deficient number, since it is larger than the sum of its proper divisors (1).

125551554043 is an equidigital number, since it uses as much as digits as its factorization.

125551554043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 125551554043 in words is "one hundred twenty-five billion, five hundred fifty-one million, five hundred fifty-four thousand, forty-three".