190436725 has 12 divisors (see below), whose sum is σ = 237162276. Its totient is φ = 151690880.

The previous prime is 190436699. The next prime is 190436731. The reversal of 190436725 is 527634091.

It can be written as a sum of positive squares in 6 ways, for example, as 64144081 + 126292644 = 8009^2 + 11238^2 .

It is not a de Polignac number, because 190436725 - 2²¹ = 188339573 is a prime.

It is a super-2 number, since 2×190436725² = 72532292457451250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10522 + ... + 22171.

It is an arithmetic number, because the mean of its divisors is an integer number (19763523).

Almost surely, 2^190436725 is an apocalyptic number.

It is an amenable number.

190436725 is a deficient number, since it is larger than the sum of its proper divisors (46725551).

190436725 is a wasteful number, since it uses less digits than its factorization.

190436725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32936 (or 32931 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 190436725 is about 13799.8813400696. The cubic root of 190436725 is about 575.3298422595.

The spelling of 190436725 in words is "one hundred ninety million, four hundred thirty-six thousand, seven hundred twenty-five".