125215225551454 has 32 divisors (see below), whose sum is σ = 194560179438240. Its totient is φ = 60439513760640.

The previous prime is 125215225551389. The next prime is 125215225551473. The reversal of 125215225551454 is 454155522512521.

It is a junction number, because it is equal to n+sod(n) for n = 125215225551398 and 125215225551407.

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 15 ways as a sum of consecutive naturals, for example, 325303249 + ... + 325687939.

It is an arithmetic number, because the mean of its divisors is an integer number (6080005607445).

Almost surely, 2^{125215225551454} is an apocalyptic number.

125215225551454 is a deficient number, since it is larger than the sum of its proper divisors (69344953886786).

125215225551454 is an frugal number, since it uses more digits than its factorization.

125215225551454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391453 (or 391395 counting only the distinct ones).

The product of its digits is 4000000, while the sum is 49.

The spelling of 125215225551454 in words is "one hundred twenty-five trillion, two hundred fifteen billion, two hundred twenty-five million, five hundred fifty-one thousand, four hundred fifty-four".