190780025 has 12 divisors (see below), whose sum is σ = 239810172. Its totient is φ = 150531840.

The previous prime is 190779997. The next prime is 190780027. The reversal of 190780025 is 520087091.

It can be written as a sum of positive squares in 6 ways, for example, as 38800441 + 151979584 = 6229^2 + 12328^2 .

It is not a de Polignac number, because 190780025 - 2¹² = 190775929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 190779973 and 190780000.

It is not an unprimeable number, because it can be changed into a prime (190780027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50444 + ... + 54093.

It is an arithmetic number, because the mean of its divisors is an integer number (19984181).

Almost surely, 2^190780025 is an apocalyptic number.

It is an amenable number.

190780025 is a deficient number, since it is larger than the sum of its proper divisors (49030147).

190780025 is a wasteful number, since it uses less digits than its factorization.

190780025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104620 (or 104615 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 190780025 is about 13812.3142521447. The cubic root of 190780025 is about 575.6753501432.

The spelling of 190780025 in words is "one hundred ninety million, seven hundred eighty thousand, twenty-five".