125223990 has 16 divisors (see below), whose sum is σ = 300537648. Its totient is φ = 33393056.

The previous prime is 125223977. The next prime is 125223991. The reversal of 125223990 is 99322521.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125223991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2087037 + ... + 2087096.

It is an arithmetic number, because the mean of its divisors is an integer number (18783603).

Almost surely, 2^125223990 is an apocalyptic number.

125223990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125223990 is an abundant number, since it is smaller than the sum of its proper divisors (175313658).

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

125223990 is a wasteful number, since it uses less digits than its factorization.

125223990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174143.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 125223990 is about 11190.3525413635. The cubic root of 125223990 is about 500.2984751231.

It can be divided in two parts, 125 and 223990, that added together give a triangular number (224115 = T₆₆₉).

The spelling of 125223990 in words is "one hundred twenty-five million, two hundred twenty-three thousand, nine hundred ninety".