71251925 has 12 divisors (see below), whose sum is σ = 88463460. Its totient is φ = 56929920.

The previous prime is 71251897. The next prime is 71251987. The reversal of 71251925 is 52915217.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5414929 + 65836996 = 2327^2 + 8114^2 .

It is not a de Polignac number, because 71251925 - 2²⁴ = 54474709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71251891 and 71251900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28631 + ... + 31019.

It is an arithmetic number, because the mean of its divisors is an integer number (7371955).

Almost surely, 2^71251925 is an apocalyptic number.

It is an amenable number.

71251925 is a deficient number, since it is larger than the sum of its proper divisors (17211535).

71251925 is a wasteful number, since it uses less digits than its factorization.

71251925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592 (or 3587 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 71251925 is about 8441.0855344559. The cubic root of 71251925 is about 414.5709505882.

The spelling of 71251925 in words is "seventy-one million, two hundred fifty-one thousand, nine hundred twenty-five".