72547574825 has 12 divisors (see below), whose sum is σ = 98137083408. Its totient is φ = 52761872400.

The previous prime is 72547574789. The next prime is 72547574831. The reversal of 72547574825 is 52847574527.

It is a happy number.

It is not a de Polignac number, because 72547574825 - 2¹² = 72547570729 is a prime.

It is a super-2 number, since 2×72547574825² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131904407 + ... + 131904956.

It is an arithmetic number, because the mean of its divisors is an integer number (8178090284).

Almost surely, 2^72547574825 is an apocalyptic number.

It is an amenable number.

72547574825 is a deficient number, since it is larger than the sum of its proper divisors (25589508583).

72547574825 is a wasteful number, since it uses less digits than its factorization.

72547574825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263809384 (or 263809379 counting only the distinct ones).

The product of its digits is 21952000, while the sum is 56.

The spelling of 72547574825 in words is "seventy-two billion, five hundred forty-seven million, five hundred seventy-four thousand, eight hundred twenty-five".