71206425 has 24 divisors (see below), whose sum is σ = 130810080. Its totient is φ = 37976400.

The previous prime is 71206393. The next prime is 71206453. The reversal of 71206425 is 52460217.

71206425 is a `hidden beast` number, since 7 + 12 + 0 + 642 + 5 = 666.

It is not a de Polignac number, because 71206425 - 2⁵ = 71206393 is a prime.

It is a super-2 number, since 2×71206425² = 10140709922561250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 52071 + ... + 53420.

It is an arithmetic number, because the mean of its divisors is an integer number (5450420).

Almost surely, 2^71206425 is an apocalyptic number.

71206425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71206425 is a deficient number, since it is larger than the sum of its proper divisors (59603655).

71206425 is a wasteful number, since it uses less digits than its factorization.

71206425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105510 (or 105499 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 71206425 is about 8438.3899530657. The cubic root of 71206425 is about 414.4826863303.

It can be divided in two parts, 71206 and 425, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 71206425 in words is "seventy-one million, two hundred six thousand, four hundred twenty-five".