72825287 has 4 divisors (see below), whose sum is σ = 74793576. Its totient is φ = 70857000.

The previous prime is 72825257. The next prime is 72825299. The reversal of 72825287 is 78252827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78252827 = 6883 ⋅11369.

It is a cyclic number.

It is not a de Polignac number, because 72825287 - 2⁸ = 72825031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72825217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984089 + ... + 984162.

It is an arithmetic number, because the mean of its divisors is an integer number (18698394).

Almost surely, 2^72825287 is an apocalyptic number.

72825287 is a deficient number, since it is larger than the sum of its proper divisors (1968289).

72825287 is a wasteful number, since it uses less digits than its factorization.

72825287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968288.

The product of its digits is 125440, while the sum is 41.

The square root of 72825287 is about 8533.7733154801. The cubic root of 72825287 is about 417.6002355336.

The spelling of 72825287 in words is "seventy-two million, eight hundred twenty-five thousand, two hundred eighty-seven".