71225910 has 144 divisors (see below), whose sum is σ = 222797952. Its totient is φ = 15724800.

The previous prime is 71225893. The next prime is 71225911. The reversal of 71225910 is 1952217.

71225910 is a `hidden beast` number, since 71 + 2 + 2 + 591 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71225911) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 136450 + ... + 136970.

It is an arithmetic number, because the mean of its divisors is an integer number (1547208).

Almost surely, 2^71225910 is an apocalyptic number.

71225910 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71225910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111398976).

71225910 is an abundant number, since it is smaller than the sum of its proper divisors (151572042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71225910 is a wasteful number, since it uses less digits than its factorization.

71225910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 71225910 is about 8439.5444189838. The cubic root of 71225910 is about 414.5204893731.

The spelling of 71225910 in words is "seventy-one million, two hundred twenty-five thousand, nine hundred ten".