71430580225 has 9 divisors (see below), whose sum is σ = 88575576553. Its totient is φ = 57143395120.

The previous prime is 71430580219. The next prime is 71430580271. The reversal of 71430580225 is 52208503417.

The square root of 71430580225 is 267265.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 90307009 + 71340273216 = 9503^2 + 267096^2 .

It is not a de Polignac number, because 71430580225 - 2³ = 71430580217 is a prime.

It is a super-2 number, since 2×71430580225² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1309599 + ... + 1363051.

Almost surely, 2^71430580225 is an apocalyptic number.

71430580225 is the 267265-th square number.

71430580225 is the 133633-rd centered octagonal number.

It is an amenable number.

71430580225 is a deficient number, since it is larger than the sum of its proper divisors (17144996328).

71430580225 is an frugal number, since it uses more digits than its factorization.

71430580225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106916 (or 53458 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 71430580225 in words is "seventy-one billion, four hundred thirty million, five hundred eighty thousand, two hundred twenty-five".