125920810 has 32 divisors (see below), whose sum is σ = 230713920. Its totient is φ = 49475712.

The previous prime is 125920807. The next prime is 125920859. The reversal of 125920810 is 18029521.

It is a super-2 number, since 2×125920810² = 31712100782112200, which contains 22 as substring.

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, 146161 + ... + 147019.

It is an arithmetic number, because the mean of its divisors is an integer number (7209810).

Almost surely, 2^125920810 is an apocalyptic number.

125920810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125920810 is a deficient number, since it is larger than the sum of its proper divisors (104793110).

125920810 is a wasteful number, since it uses less digits than its factorization.

125920810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 125920810 is about 11221.4442029536. Note that the first 3 decimals coincide. The cubic root of 125920810 is about 501.2247442204.

The spelling of 125920810 in words is "one hundred twenty-five million, nine hundred twenty thousand, eight hundred ten".