72825541 has 6 divisors (see below), whose sum is σ = 75251526. Its totient is φ = 70475400.

The previous prime is 72825539. The next prime is 72825547. The reversal of 72825541 is 14552827.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 20205025 = 7254^2 + 4495^2 .

It is not a de Polignac number, because 72825541 - 2¹ = 72825539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72825497 and 72825506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72825547) 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, 36930 + ... + 38851.

It is an arithmetic number, because the mean of its divisors is an integer number (12541921).

Almost surely, 2^72825541 is an apocalyptic number.

It is an amenable number.

72825541 is a deficient number, since it is larger than the sum of its proper divisors (2425985).

72825541 is an equidigital number, since it uses as much as digits as its factorization.

72825541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75843 (or 75812 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 72825541 is about 8533.7881975123. The cubic root of 72825541 is about 417.6007210350.

The spelling of 72825541 in words is "seventy-two million, eight hundred twenty-five thousand, five hundred forty-one".