125571785827 has 16 divisors (see below), whose sum is σ = 130714848000. Its totient is φ = 120531194784.

The previous prime is 125571785789. The next prime is 125571785831. The reversal of 125571785827 is 728587175521.

It is a cyclic number.

It is not a de Polignac number, because 125571785827 - 2¹⁵ = 125571753059 is a prime.

It is a super-3 number, since 3×125571785827³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125571782827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9428449 + ... + 9441757.

It is an arithmetic number, because the mean of its divisors is an integer number (8169678000).

Almost surely, 2^125571785827 is an apocalyptic number.

125571785827 is a deficient number, since it is larger than the sum of its proper divisors (5143062173).

125571785827 is a wasteful number, since it uses less digits than its factorization.

125571785827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17130.

The product of its digits is 10976000, while the sum is 58.

The spelling of 125571785827 in words is "one hundred twenty-five billion, five hundred seventy-one million, seven hundred eighty-five thousand, eight hundred twenty-seven".