125912190 has 32 divisors (see below), whose sum is σ = 302584320. Its totient is φ = 33532704.

The previous prime is 125912167. The next prime is 125912191. The reversal of 125912190 is 91219521.

It is a super-2 number, since 2×125912190² = 31707759181192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125912191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25287 + ... + 29853.

It is an arithmetic number, because the mean of its divisors is an integer number (9455760).

Almost surely, 2^125912190 is an apocalyptic number.

125912190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125912190 is an abundant number, since it is smaller than the sum of its proper divisors (176672130).

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

125912190 is a wasteful number, since it uses less digits than its factorization.

125912190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 125912190 is about 11221.0601103461. The cubic root of 125912190 is about 501.2133067254.

The spelling of 125912190 in words is "one hundred twenty-five million, nine hundred twelve thousand, one hundred ninety".