71072225 has 24 divisors (see below), whose sum is σ = 102874368. Its totient is φ = 47692800.

The previous prime is 71072213. The next prime is 71072269. The reversal of 71072225 is 52227017.

It is not a de Polignac number, because 71072225 - 2¹⁰ = 71071201 is a prime.

It is a super-2 number, since 2×71072225² = 10102522332901250, 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 = 71072194 and 71072203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3905 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (4286432).

Almost surely, 2^71072225 is an apocalyptic number.

It is an amenable number.

71072225 is a deficient number, since it is larger than the sum of its proper divisors (31802143).

71072225 is a wasteful number, since it uses less digits than its factorization.

71072225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705 (or 8700 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 71072225 is about 8430.4344490661. The cubic root of 71072225 is about 414.2221360733. Note that the first 3 decimals are identical.

The spelling of 71072225 in words is "seventy-one million, seventy-two thousand, two hundred twenty-five".