71456402025 has 72 divisors (see below), whose sum is σ = 128850190560. Its totient is φ = 37853521920.

The previous prime is 71456402009. The next prime is 71456402057. The reversal of 71456402025 is 52020465417.

It is a happy number.

71456402025 is a `hidden beast` number, since 7 + 1 + 4 + 5 + 640 + 2 + 0 + 2 + 5 = 666.

It is not a de Polignac number, because 71456402025 - 2⁴ = 71456402009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 54671422 + ... + 54672728.

It is an arithmetic number, because the mean of its divisors is an integer number (1789585980).

Almost surely, 2^71456402025 is an apocalyptic number.

71456402025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71456402025 is a deficient number, since it is larger than the sum of its proper divisors (57393788535).

71456402025 is a wasteful number, since it uses less digits than its factorization.

71456402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775 (or 2767 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 71456402025 in words is "seventy-one billion, four hundred fifty-six million, four hundred two thousand, twenty-five".