71081025 has 12 divisors (see below), whose sum is σ = 117520752. Its totient is φ = 37909840.

The previous prime is 71080991. The next prime is 71081057. The reversal of 71081025 is 52018017.

It is not a de Polignac number, because 71081025 - 2¹⁰ = 71080001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71080986 and 71081004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473799 + ... + 473948.

It is an arithmetic number, because the mean of its divisors is an integer number (9793396).

Almost surely, 2^71081025 is an apocalyptic number.

71081025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71081025 is a deficient number, since it is larger than the sum of its proper divisors (46439727).

71081025 is a wasteful number, since it uses less digits than its factorization.

71081025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947760 (or 947755 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 71081025 is about 8430.9563514467. The cubic root of 71081025 is about 414.2392313796.

The spelling of 71081025 in words is "seventy-one million, eighty-one thousand, twenty-five".