125402422221455 has 8 divisors (see below), whose sum is σ = 152295953734512. Its totient is φ = 99113239731328.

The previous prime is 125402422221409. The next prime is 125402422221497. The reversal of 125402422221455 is 554122224204521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125402422221455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151087255274 + ... + 151087256103.

It is an arithmetic number, because the mean of its divisors is an integer number (19036994216814).

Almost surely, 2^{125402422221455} is an apocalyptic number.

125402422221455 is a deficient number, since it is larger than the sum of its proper divisors (26893531513057).

125402422221455 is an equidigital number, since it uses as much as digits as its factorization.

125402422221455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302174511465.

The product of its (nonzero) digits is 512000, while the sum is 41.

Adding to 125402422221455 its reverse (554122224204521), we get a palindrome (679524646425976).

The spelling of 125402422221455 in words is "one hundred twenty-five trillion, four hundred two billion, four hundred twenty-two million, two hundred twenty-one thousand, four hundred fifty-five".