125174763561 has 8 divisors (see below), whose sum is σ = 166901873344. Its totient is φ = 83448748080.

The previous prime is 125174763547. The next prime is 125174763589. The reversal of 125174763561 is 165367471521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125174763561 - 2¹³ = 125174755369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125174763561.

It is not an unprimeable number, because it can be changed into a prime (125174763061) 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 7 ways as a sum of consecutive naturals, for example, 46995 + ... + 502551.

It is an arithmetic number, because the mean of its divisors is an integer number (20862734168).

Almost surely, 2^125174763561 is an apocalyptic number.

It is an amenable number.

125174763561 is a deficient number, since it is larger than the sum of its proper divisors (41727109783).

125174763561 is an equidigital number, since it uses as much as digits as its factorization.

125174763561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547151.

The product of its digits is 1058400, while the sum is 48.

The spelling of 125174763561 in words is "one hundred twenty-five billion, one hundred seventy-four million, seven hundred sixty-three thousand, five hundred sixty-one".