972725245 has 4 divisors (see below), whose sum is σ = 1167270300. Its totient is φ = 778180192.

The previous prime is 972725209. The next prime is 972725249. The reversal of 972725245 is 542527279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542527279 = 7 ⋅77503897.

It can be written as a sum of positive squares in 2 ways, for example, as 635745796 + 336979449 = 25214^2 + 18357^2 .

It is a cyclic number.

It is not a de Polignac number, because 972725245 - 2²¹ = 970628093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972725249) 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, 97272520 + ... + 97272529.

It is an arithmetic number, because the mean of its divisors is an integer number (291817575).

Almost surely, 2^972725245 is an apocalyptic number.

It is an amenable number.

972725245 is a deficient number, since it is larger than the sum of its proper divisors (194545055).

972725245 is a wasteful number, since it uses less digits than its factorization.

972725245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194545054.

The product of its digits is 352800, while the sum is 43.

The square root of 972725245 is about 31188.5434895572. The cubic root of 972725245 is about 990.8244823723.

The spelling of 972725245 in words is "nine hundred seventy-two million, seven hundred twenty-five thousand, two hundred forty-five".