71310617025 has 24 divisors (see below), whose sum is σ = 117907870080. Its totient is φ = 38029861440.

The previous prime is 71310617023. The next prime is 71310617041. The reversal of 71310617025 is 52071601317.

It is not a de Polignac number, because 71310617025 - 2¹ = 71310617023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71310617023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2236344 + ... + 2268006.

It is an arithmetic number, because the mean of its divisors is an integer number (4912827920).

Almost surely, 2^71310617025 is an apocalyptic number.

71310617025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71310617025 is a deficient number, since it is larger than the sum of its proper divisors (46597253055).

71310617025 is a wasteful number, since it uses less digits than its factorization.

71310617025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61705 (or 61700 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The spelling of 71310617025 in words is "seventy-one billion, three hundred ten million, six hundred seventeen thousand, twenty-five".