72250641 has 6 divisors (see below), whose sum is σ = 104362050. Its totient is φ = 48167088.

The previous prime is 72250639. The next prime is 72250669. The reversal of 72250641 is 14605227.

It can be written as a sum of positive squares in only one way, i.e., 68956416 + 3294225 = 8304^2 + 1815^2 .

It is not a de Polignac number, because 72250641 - 2¹ = 72250639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72250691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4013916 + ... + 4013933.

It is an arithmetic number, because the mean of its divisors is an integer number (17393675).

Almost surely, 2^72250641 is an apocalyptic number.

It is an amenable number.

72250641 is a deficient number, since it is larger than the sum of its proper divisors (32111409).

72250641 is a wasteful number, since it uses less digits than its factorization.

72250641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027855 (or 8027852 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 72250641 is about 8500.0377057987. The cubic root of 72250641 is about 416.4989409903.

Adding to 72250641 its reverse (14605227), we get a palindrome (86855868).

The spelling of 72250641 in words is "seventy-two million, two hundred fifty thousand, six hundred forty-one".