125778091305 has 16 divisors (see below), whose sum is σ = 201453081984. Its totient is φ = 67012270080.

The previous prime is 125778091253. The next prime is 125778091331. The reversal of 125778091305 is 503190877521.

It is not a de Polignac number, because 125778091305 - 2⁹ = 125778090793 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4321176 + ... + 4350185.

It is an arithmetic number, because the mean of its divisors is an integer number (12590817624).

Almost surely, 2^125778091305 is an apocalyptic number.

125778091305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125778091305 is a deficient number, since it is larger than the sum of its proper divisors (75674990679).

125778091305 is an equidigital number, since it uses as much as digits as its factorization.

125778091305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672336.

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 125778091305 in words is "one hundred twenty-five billion, seven hundred seventy-eight million, ninety-one thousand, three hundred five".