125818290 has 96 divisors (see below), whose sum is σ = 359115120. Its totient is φ = 30371328.

The previous prime is 125818283. The next prime is 125818307. The reversal of 125818290 is 92818521.

It can be written as a sum of positive squares in 8 ways, for example, as 86992929 + 38825361 = 9327^2 + 6231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60996 + ... + 63024.

Almost surely, 2^125818290 is an apocalyptic number.

125818290 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 125818290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179557560).

125818290 is an abundant number, since it is smaller than the sum of its proper divisors (233296830).

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

125818290 is a wasteful number, since it uses less digits than its factorization.

125818290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 125818290 is about 11216.8752333259. The cubic root of 125818290 is about 501.0886811596.

The spelling of 125818290 in words is "one hundred twenty-five million, eight hundred eighteen thousand, two hundred ninety".