125071820 has 12 divisors (see below), whose sum is σ = 262650864. Its totient is φ = 50028720.

The previous prime is 125071801. The next prime is 125071829. The reversal of 125071820 is 28170521.

It is a super-2 number, since 2×125071820² = 31285920316224800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125071820.

It is not an unprimeable number, because it can be changed into a prime (125071829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3126776 + ... + 3126815.

It is an arithmetic number, because the mean of its divisors is an integer number (21887572).

Almost surely, 2^125071820 is an apocalyptic number.

125071820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125071820 is an abundant number, since it is smaller than the sum of its proper divisors (137579044).

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

125071820 is a wasteful number, since it uses less digits than its factorization.

125071820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253600 (or 6253598 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 125071820 is about 11183.5513143187. The cubic root of 125071820 is about 500.0957416659.

The spelling of 125071820 in words is "one hundred twenty-five million, seventy-one thousand, eight hundred twenty".