125203521210 has 32 divisors (see below), whose sum is σ = 300501133632. Its totient is φ = 33386196480.

The previous prime is 125203521199. The next prime is 125203521227. The reversal of 125203521210 is 12125302521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772362 + ... + 920298.

It is an arithmetic number, because the mean of its divisors is an integer number (9390660426).

Almost surely, 2^125203521210 is an apocalyptic number.

125203521210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125203521210 is an abundant number, since it is smaller than the sum of its proper divisors (175297612422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125203521210 is a wasteful number, since it uses less digits than its factorization.

125203521210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176158.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 125203521210 its reverse (12125302521), we get a palindrome (137328823731).

The spelling of 125203521210 in words is "one hundred twenty-five billion, two hundred three million, five hundred twenty-one thousand, two hundred ten".