71270925 has 24 divisors (see below), whose sum is σ = 128548320. Its totient is φ = 34555200.

The previous prime is 71270923. The next prime is 71270929. The reversal of 71270925 is 52907217.

It is not a de Polignac number, because 71270925 - 2¹ = 71270923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71270923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42370 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (5356180).

Almost surely, 2^71270925 is an apocalyptic number.

71270925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71270925 is a deficient number, since it is larger than the sum of its proper divisors (57277395).

71270925 is a wasteful number, since it uses less digits than its factorization.

71270925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86413 (or 86408 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 71270925 is about 8442.2109071025. The cubic root of 71270925 is about 414.6077970688.

The spelling of 71270925 in words is "seventy-one million, two hundred seventy thousand, nine hundred twenty-five".