71457746725 has 6 divisors (see below), whose sum is σ = 88607605970. Its totient is φ = 57166197360.

The previous prime is 71457746651. The next prime is 71457746791. The reversal of 71457746725 is 52764775417.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 957407364 + 70500339361 = 30942^2 + 265519^2 .

It is not a de Polignac number, because 71457746725 - 2⁷ = 71457746597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1429154910 + ... + 1429154959.

Almost surely, 2^71457746725 is an apocalyptic number.

It is an amenable number.

71457746725 is a deficient number, since it is larger than the sum of its proper divisors (17149859245).

71457746725 is a wasteful number, since it uses less digits than its factorization.

71457746725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858309879 (or 2858309874 counting only the distinct ones).

The product of its digits is 11524800, while the sum is 55.

The spelling of 71457746725 in words is "seventy-one billion, four hundred fifty-seven million, seven hundred forty-six thousand, seven hundred twenty-five".