1285325457 has 16 divisors (see below), whose sum is σ = 1849292928. Its totient is φ = 789384960.

The previous prime is 1285325417. The next prime is 1285325473. The reversal of 1285325457 is 7545235821.

It is not a de Polignac number, because 1285325457 - 2⁷ = 1285325329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285325407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13144 + ... + 52377.

It is an arithmetic number, because the mean of its divisors is an integer number (115580808).

Almost surely, 2^1285325457 is an apocalyptic number.

It is an amenable number.

1285325457 is a deficient number, since it is larger than the sum of its proper divisors (563967471).

1285325457 is a wasteful number, since it uses less digits than its factorization.

1285325457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66040.

The product of its digits is 336000, while the sum is 42.

The square root of 1285325457 is about 35851.4359126660. The cubic root of 1285325457 is about 1087.2707459144.

The spelling of 1285325457 in words is "one billion, two hundred eighty-five million, three hundred twenty-five thousand, four hundred fifty-seven".