71425149 has 16 divisors (see below), whose sum is σ = 97087680. Its totient is φ = 46696320.

The previous prime is 71425103. The next prime is 71425163. The reversal of 71425149 is 94152417.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-71425149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71425049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53409 + ... + 54729.

It is an arithmetic number, because the mean of its divisors is an integer number (6067980).

Almost surely, 2^71425149 is an apocalyptic number.

It is an amenable number.

71425149 is a deficient number, since it is larger than the sum of its proper divisors (25662531).

71425149 is a wasteful number, since it uses less digits than its factorization.

71425149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its digits is 10080, while the sum is 33.

The square root of 71425149 is about 8451.3400712550. The cubic root of 71425149 is about 414.9066398592.

The spelling of 71425149 in words is "seventy-one million, four hundred twenty-five thousand, one hundred forty-nine".