125719475565 has 16 divisors (see below), whose sum is σ = 209896864128. Its totient is φ = 64135152576.

The previous prime is 125719475551. The next prime is 125719475579. The reversal of 125719475565 is 565574917521.

It is an interprime number because it is at equal distance from previous prime (125719475551) and next prime (125719475579).

It is not a de Polignac number, because 125719475565 - 2⁵ = 125719475533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182201794 + ... + 182202483.

It is an arithmetic number, because the mean of its divisors is an integer number (13118554008).

Almost surely, 2^125719475565 is an apocalyptic number.

125719475565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125719475565 is a deficient number, since it is larger than the sum of its proper divisors (84177388563).

125719475565 is a wasteful number, since it uses less digits than its factorization.

125719475565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364404308.

The product of its digits is 13230000, while the sum is 57.

The spelling of 125719475565 in words is "one hundred twenty-five billion, seven hundred nineteen million, four hundred seventy-five thousand, five hundred sixty-five".