125142775453451 has 4 divisors (see below), whose sum is σ = 143020314803952. Its totient is φ = 107265236102952.

The previous prime is 125142775453363. The next prime is 125142775453457. The reversal of 125142775453451 is 154354577241521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125142775453451 - 2²² = 125142771259147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125142775453457) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8938769675240 + ... + 8938769675253.

It is an arithmetic number, because the mean of its divisors is an integer number (35755078700988).

Almost surely, 2^{125142775453451} is an apocalyptic number.

125142775453451 is a deficient number, since it is larger than the sum of its proper divisors (17877539350501).

125142775453451 is an equidigital number, since it uses as much as digits as its factorization.

125142775453451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17877539350500.

The product of its digits is 23520000, while the sum is 56.

The spelling of 125142775453451 in words is "one hundred twenty-five trillion, one hundred forty-two billion, seven hundred seventy-five million, four hundred fifty-three thousand, four hundred fifty-one".