72825405 has 8 divisors (see below), whose sum is σ = 116520672. Its totient is φ = 38840208.

The previous prime is 72825373. The next prime is 72825413. The reversal of 72825405 is 50452827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72825405 - 2⁵ = 72825373 is a prime.

It is a super-2 number, since 2×72825405² = 10607079226828050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427499 + ... + 2427528.

It is an arithmetic number, because the mean of its divisors is an integer number (14565084).

Almost surely, 2^72825405 is an apocalyptic number.

It is an amenable number.

72825405 is a deficient number, since it is larger than the sum of its proper divisors (43695267).

72825405 is a wasteful number, since it uses less digits than its factorization.

72825405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855035.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 72825405 is about 8533.7802291833. The cubic root of 72825405 is about 417.6004610816.

The spelling of 72825405 in words is "seventy-two million, eight hundred twenty-five thousand, four hundred five".