125521454 has 16 divisors (see below), whose sum is σ = 195210000. Its totient is φ = 60461184.

The previous prime is 125521433. The next prime is 125521463. The reversal of 125521454 is 454125521.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26774 + ... + 31110.

It is an arithmetic number, because the mean of its divisors is an integer number (12200625).

Almost surely, 2^125521454 is an apocalyptic number.

125521454 is a deficient number, since it is larger than the sum of its proper divisors (69688546).

125521454 is a wasteful number, since it uses less digits than its factorization.

125521454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867.

The product of its digits is 8000, while the sum is 29.

The square root of 125521454 is about 11203.6357491664. The cubic root of 125521454 is about 500.6943074281.

Adding to 125521454 its reverse (454125521), we get a palindrome (579646975).

The spelling of 125521454 in words is "one hundred twenty-five million, five hundred twenty-one thousand, four hundred fifty-four".