2947947025 has 9 divisors (see below), whose sum is σ = 3655790971. Its totient is φ = 2358140440.

The previous prime is 2947947017. The next prime is 2947947029. The reversal of 2947947025 is 5207497492.

The square root of 2947947025 is 54295.

It is a perfect power (a square), and thus also a powerful number.

2947947025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1061260929 + 1886686096 = 32577^2 + 43436^2 .

It is not a de Polignac number, because 2947947025 - 2³ = 2947947017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2947947025.

It is not an unprimeable number, because it can be changed into a prime (2947947029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 266046 + ... + 276904.

Almost surely, 2^2947947025 is an apocalyptic number.

2947947025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2947947025 is the 54295-th square number.

2947947025 is the 27148-th centered octagonal number.

It is an amenable number.

2947947025 is a deficient number, since it is larger than the sum of its proper divisors (707843946).

2947947025 is an frugal number, since it uses more digits than its factorization.

2947947025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21728 (or 10864 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The cubic root of 2947947025 is about 1433.8593686958.

Multiplying 2947947025 by its sum of digits (49), we get a square (144449404225 = 380065²).

The spelling of 2947947025 in words is "two billion, nine hundred forty-seven million, nine hundred forty-seven thousand, twenty-five".