1071025641 has 12 divisors (see below), whose sum is σ = 1768042432. Its totient is φ = 612014616.

The previous prime is 1071025601. The next prime is 1071025663. The reversal of 1071025641 is 1465201701.

It is a happy number.

1071025641 is a `hidden beast` number, since 1 + 0 + 7 + 10 + 2 + 5 + 641 = 666.

It is not a de Polignac number, because 1071025641 - 2⁶ = 1071025577 is a prime.

It is a super-2 number, since 2×1071025641² = 2294191847358921762, which contains 22 as substring.

It is a Duffinian number.

1071025641 is a modest number, since divided by 25641 gives 1071 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1071025601) 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, 8500141 + ... + 8500266.

Almost surely, 2^1071025641 is an apocalyptic number.

It is an amenable number.

1071025641 is a deficient number, since it is larger than the sum of its proper divisors (697016791).

1071025641 is a wasteful number, since it uses less digits than its factorization.

1071025641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17000420 (or 17000417 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1071025641 is about 32726.5280926651. The cubic root of 1071025641 is about 1023.1358195787.

The spelling of 1071025641 in words is "one billion, seventy-one million, twenty-five thousand, six hundred forty-one".