71380525 has 6 divisors (see below), whose sum is σ = 88511882. Its totient is φ = 57104400.

The previous prime is 71380499. The next prime is 71380541. The reversal of 71380525 is 52508317.

It can be written as a sum of positive squares in 3 ways, for example, as 23687689 + 47692836 = 4867^2 + 6906^2 .

It is not a de Polignac number, because 71380525 - 2⁵ = 71380493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1427586 + ... + 1427635.

Almost surely, 2^71380525 is an apocalyptic number.

It is an amenable number.

71380525 is a deficient number, since it is larger than the sum of its proper divisors (17131357).

71380525 is a wasteful number, since it uses less digits than its factorization.

71380525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855231 (or 2855226 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 71380525 is about 8448.6996040811. The cubic root of 71380525 is about 414.8202153467.

The spelling of 71380525 in words is "seventy-one million, three hundred eighty thousand, five hundred twenty-five".