1925650681 has 8 divisors (see below), whose sum is σ = 1978248384. Its totient is φ = 1873082160.

The previous prime is 1925650667. The next prime is 1925650691. The reversal of 1925650681 is 1860565291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1925650681 - 2¹³ = 1925642489 is a prime.

It is a super-2 number, since 2×1925650681² = 7416261090471527522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1925650691) 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 7 ways as a sum of consecutive naturals, for example, 229836 + ... + 238066.

It is an arithmetic number, because the mean of its divisors is an integer number (247281048).

Almost surely, 2^1925650681 is an apocalyptic number.

It is an amenable number.

1925650681 is a deficient number, since it is larger than the sum of its proper divisors (52597703).

1925650681 is an equidigital number, since it uses as much as digits as its factorization.

1925650681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14591.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1925650681 is about 43882.2365086375. The cubic root of 1925650681 is about 1244.1111123152. Note that the first 5 decimals are identical.

The spelling of 1925650681 in words is "one billion, nine hundred twenty-five million, six hundred fifty thousand, six hundred eighty-one".