1025689473 has 10 divisors (see below), whose sum is σ = 1532202914. Its totient is φ = 683792928.

The previous prime is 1025689447. The next prime is 1025689517. The reversal of 1025689473 is 3749865201.

1025689473 is a `hidden beast` number, since 10 + 2 + 568 + 9 + 4 + 73 = 666.

1025689473 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1019652624 + 6036849 = 31932^2 + 2457^2 .

It is not a de Polignac number, because 1025689473 - 2⁶ = 1025689409 is a prime.

It is a Duffinian number.

1025689473 is strictly pandigital in base 10.

It is not an unprimeable number, because it can be changed into a prime (1025689403) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6331336 + ... + 6331497.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1025689473 = 2051378946, but 3⋅1025689473 = 3077068419 is not.

Almost surely, 2^1025689473 is an apocalyptic number.

It is an amenable number.

1025689473 is a deficient number, since it is larger than the sum of its proper divisors (506513441).

1025689473 is an equidigital number, since it uses as much as digits as its factorization.

1025689473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662845 (or 12662836 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1025689473 is about 32026.3871362350. The cubic root of 1025689473 is about 1008.4908589327.

The spelling of 1025689473 in words is "one billion, twenty-five million, six hundred eighty-nine thousand, four hundred seventy-three".