125541953783 has 2 divisors, whose sum is σ = 125541953784. Its totient is φ = 125541953782.

The previous prime is 125541953759. The next prime is 125541953809. The reversal of 125541953783 is 387359145521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125541953783 - 2²⁰ = 125540905207 is a prime.

It is a super-2 number, since 2×125541953783² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125541923783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62770976891 + 62770976892.

It is an arithmetic number, because the mean of its divisors is an integer number (62770976892).

Almost surely, 2^125541953783 is an apocalyptic number.

125541953783 is a deficient number, since it is larger than the sum of its proper divisors (1).

125541953783 is an equidigital number, since it uses as much as digits as its factorization.

125541953783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 53.

The spelling of 125541953783 in words is "one hundred twenty-five billion, five hundred forty-one million, nine hundred fifty-three thousand, seven hundred eighty-three".