125091090 has 48 divisors (see below), whose sum is σ = 327270528. Its totient is φ = 33149088.

The previous prime is 125091067. The next prime is 125091101. The reversal of 125091090 is 90190521.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10407 + ... + 18933.

It is an arithmetic number, because the mean of its divisors is an integer number (6818136).

Almost surely, 2^125091090 is an apocalyptic number.

125091090 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 125091090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163635264).

125091090 is an abundant number, since it is smaller than the sum of its proper divisors (202179438).

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

125091090 is a wasteful number, since it uses less digits than its factorization.

125091090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703 (or 8700 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 125091090 is about 11184.4128142697. The cubic root of 125091090 is about 500.1214238434.

The spelling of 125091090 in words is "one hundred twenty-five million, ninety-one thousand, ninety".