72730776248025 has 48 divisors (see below), whose sum is σ = 138787192253568. Its totient is φ = 32919163200000.

The previous prime is 72730776247999. The next prime is 72730776248071. The reversal of 72730776248025 is 52084267703727.

It is not a de Polignac number, because 72730776248025 - 2¹² = 72730776243929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72730776248025.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 685762876 + ... + 685868925.

It is an arithmetic number, because the mean of its divisors is an integer number (2891399838616).

Almost surely, 2^{72730776248025} is an apocalyptic number.

72730776248025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72730776248025 is a deficient number, since it is larger than the sum of its proper divisors (66056416005543).

72730776248025 is a wasteful number, since it uses less digits than its factorization.

72730776248025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371631922 (or 1371631917 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 60.

The spelling of 72730776248025 in words is "seventy-two trillion, seven hundred thirty billion, seven hundred seventy-six million, two hundred forty-eight thousand, twenty-five".