71508025 has 12 divisors (see below), whose sum is σ = 88936272. Its totient is φ = 57034640.

The previous prime is 71508023. The next prime is 71508061. The reversal of 71508025 is 52080517.

It is not a de Polignac number, because 71508025 - 2¹ = 71508023 is a prime.

It is a super-2 number, since 2×71508025² = 10226795278801250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71507984 and 71508002.

It is not an unprimeable number, because it can be changed into a prime (71508023) 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, 4554 + ... + 12796.

It is an arithmetic number, because the mean of its divisors is an integer number (7411356).

Almost surely, 2^71508025 is an apocalyptic number.

It is an amenable number.

71508025 is a deficient number, since it is larger than the sum of its proper divisors (17428247).

71508025 is a wasteful number, since it uses less digits than its factorization.

71508025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8600 (or 8595 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 71508025 is about 8456.2417775274. The cubic root of 71508025 is about 415.0670526000.

The spelling of 71508025 in words is "seventy-one million, five hundred eight thousand, twenty-five".