1912750225 has 9 divisors (see below), whose sum is σ = 2372081467. Its totient is φ = 1530025240.

The previous prime is 1912750207. The next prime is 1912750241. The reversal of 1912750225 is 5220572191.

The square root of 1912750225 is 43735.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 688590081 + 1224160144 = 26241^2 + 34988^2 .

It is not a de Polignac number, because 1912750225 - 2⁷ = 1912750097 is a prime.

It is a super-2 number, since 2×1912750225² = 7317226846475101250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 214302 + ... + 223048.

Almost surely, 2^1912750225 is an apocalyptic number.

1912750225 is the 43735-th square number.

1912750225 is the 21868-th centered octagonal number.

It is an amenable number.

1912750225 is a deficient number, since it is larger than the sum of its proper divisors (459331242).

1912750225 is an frugal number, since it uses more digits than its factorization.

1912750225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17504 (or 8752 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The cubic root of 1912750225 is about 1241.3266725723.

The spelling of 1912750225 in words is "one billion, nine hundred twelve million, seven hundred fifty thousand, two hundred twenty-five".