125798847065 has 4 divisors (see below), whose sum is σ = 150958616484. Its totient is φ = 100639077648.

The previous prime is 125798847019. The next prime is 125798847101. The reversal of 125798847065 is 560748897521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560748897521 = 146893 ⋅3817397.

It can be written as a sum of positive squares in 2 ways, for example, as 41221993024 + 84576854041 = 203032^2 + 290821^2 .

It is a cyclic number.

It is not a de Polignac number, because 125798847065 - 2³⁶ = 57079370329 is a prime.

It is a super-2 number, since 2×125798847065² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125798846989 and 125798847007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12579884702 + ... + 12579884711.

It is an arithmetic number, because the mean of its divisors is an integer number (37739654121).

Almost surely, 2^125798847065 is an apocalyptic number.

It is an amenable number.

125798847065 is a deficient number, since it is larger than the sum of its proper divisors (25159769419).

125798847065 is an equidigital number, since it uses as much as digits as its factorization.

125798847065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25159769418.

The product of its (nonzero) digits is 33868800, while the sum is 62.

The spelling of 125798847065 in words is "one hundred twenty-five billion, seven hundred ninety-eight million, eight hundred forty-seven thousand, sixty-five".