71149225 has 27 divisors (see below), whose sum is σ = 103056741. Its totient is φ = 48585600.

The previous prime is 71149201. The next prime is 71149249. The reversal of 71149225 is 52294117.

The square root of 71149225 is 8435.

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

It is an interprime number because it is at equal distance from previous prime (71149201) and next prime (71149249).

It can be written as a sum of positive squares in 4 ways, for example, as 1058841 + 70090384 = 1029^2 + 8372^2 .

It is not a de Polignac number, because 71149225 - 2⁵ = 71149193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 295105 + ... + 295345.

Almost surely, 2^71149225 is an apocalyptic number.

71149225 is the 8435-th square number.

71149225 is the 4218-th centered octagonal number.

It is an amenable number.

71149225 is a deficient number, since it is larger than the sum of its proper divisors (31907516).

71149225 is an equidigital number, since it uses as much as digits as its factorization.

71149225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 253 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The cubic root of 71149225 is about 414.3716721870.

The spelling of 71149225 in words is "seventy-one million, one hundred forty-nine thousand, two hundred twenty-five".