125999490 has 64 divisors (see below), whose sum is σ = 314616960. Its totient is φ = 32256000.

The previous prime is 125999483. The next prime is 125999491. The reversal of 125999490 is 94999521.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (125999491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218082 + ... + 218658.

It is an arithmetic number, because the mean of its divisors is an integer number (4915890).

Almost surely, 2^125999490 is an apocalyptic number.

125999490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125999490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157308480).

125999490 is an abundant number, since it is smaller than the sum of its proper divisors (188617470).

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

125999490 is a wasteful number, since it uses less digits than its factorization.

125999490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 125999490 is about 11224.9494430933. The cubic root of 125999490 is about 501.3291170982.

The spelling of 125999490 in words is "one hundred twenty-five million, nine hundred ninety-nine thousand, four hundred ninety".