125612217210 has 32 divisors (see below), whose sum is σ = 301514859072. Its totient is φ = 33491531520.

The previous prime is 125612217169. The next prime is 125612217239. The reversal of 125612217210 is 12712216521.

It is a happy number.

It is a super-2 number, since 2×125612217210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 112159 + ... + 513618.

It is an arithmetic number, because the mean of its divisors is an integer number (9422339346).

Almost surely, 2^125612217210 is an apocalyptic number.

125612217210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125612217210 is an abundant number, since it is smaller than the sum of its proper divisors (175902641862).

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

125612217210 is a wasteful number, since it uses less digits than its factorization.

125612217210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632478.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 125612217210 in words is "one hundred twenty-five billion, six hundred twelve million, two hundred seventeen thousand, two hundred ten".