190125705 has 128 divisors (see below), whose sum is σ = 420028416. Its totient is φ = 70963200.

The previous prime is 190125701. The next prime is 190125779. The reversal of 190125705 is 507521091.

It is not a de Polignac number, because 190125705 - 2² = 190125701 is a prime.

It is a super-2 number, since 2×190125705² = 72295567403494050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190125701) 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 127 ways as a sum of consecutive naturals, for example, 451395 + ... + 451815.

It is an arithmetic number, because the mean of its divisors is an integer number (3281472).

Almost surely, 2^190125705 is an apocalyptic number.

190125705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190125705 is an abundant number, since it is smaller than the sum of its proper divisors (229902711).

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

190125705 is a wasteful number, since it uses less digits than its factorization.

190125705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 190125705 is about 13788.6077977438. The cubic root of 190125705 is about 575.0164632967.

Adding to 190125705 its reverse (507521091), we get a palindrome (697646796).

The spelling of 190125705 in words is "one hundred ninety million, one hundred twenty-five thousand, seven hundred five".