71025 has 12 divisors (see below), whose sum is σ = 117552. Its totient is φ = 37840.

The previous prime is 71023. The next prime is 71039. The reversal of 71025 is 52017.

It is a happy number.

It is not a de Polignac number, because 71025 - 2¹ = 71023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

71025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 70995 and 71013.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71025.

It is not an unprimeable number, because it can be changed into a prime (71023) 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, 399 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (9796).

2⁷¹⁰²⁵ is an apocalyptic number.

71025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71025 is a deficient number, since it is larger than the sum of its proper divisors (46527).

71025 is a wasteful number, since it uses less digits than its factorization.

71025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 71025 is about 266.5051594247. The cubic root of 71025 is about 41.4130370386.

The spelling of 71025 in words is "seventy-one thousand, twenty-five".