125659469697 has 4 divisors (see below), whose sum is σ = 167545959600. Its totient is φ = 83772979796.

The previous prime is 125659469657. The next prime is 125659469701. The reversal of 125659469697 is 796964956521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125659469697 - 2¹⁰ = 125659468673 is a prime.

It is a super-2 number, since 2×125659469697² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125659469627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20943244947 + ... + 20943244952.

It is an arithmetic number, because the mean of its divisors is an integer number (41886489900).

Almost surely, 2^125659469697 is an apocalyptic number.

It is an amenable number.

125659469697 is a deficient number, since it is larger than the sum of its proper divisors (41886489903).

125659469697 is an equidigital number, since it uses as much as digits as its factorization.

125659469697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41886489902.

The product of its digits is 220449600, while the sum is 69.

The spelling of 125659469697 in words is "one hundred twenty-five billion, six hundred fifty-nine million, four hundred sixty-nine thousand, six hundred ninety-seven".