190425815 has 4 divisors (see below), whose sum is σ = 228510984. Its totient is φ = 152340648.

The previous prime is 190425799. The next prime is 190425817. The reversal of 190425815 is 518524091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518524091 = 1009 ⋅513899.

It is a cyclic number.

It is not a de Polignac number, because 190425815 - 2⁴ = 190425799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190425817) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19042577 + ... + 19042586.

It is an arithmetic number, because the mean of its divisors is an integer number (57127746).

Almost surely, 2^190425815 is an apocalyptic number.

190425815 is a deficient number, since it is larger than the sum of its proper divisors (38085169).

190425815 is an equidigital number, since it uses as much as digits as its factorization.

190425815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38085168.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 190425815 is about 13799.4860411539. The cubic root of 190425815 is about 575.3188552883.

The spelling of 190425815 in words is "one hundred ninety million, four hundred twenty-five thousand, eight hundred fifteen".