1947015625 has 21 divisors (see below), whose sum is σ = 2440652353. Its totient is φ = 1553200000.

The previous prime is 1947015617. The next prime is 1947015643. The reversal of 1947015625 is 5265107491.

The square root of 1947015625 is 44125.

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

It can be written as a sum of positive squares in 10 ways, for example, as 1466353849 + 480661776 = 38293^2 + 21924^2 .

It is not a de Polignac number, because 1947015625 - 2³ = 1947015617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 5515449 + ... + 5515801.

Almost surely, 2^1947015625 is an apocalyptic number.

1947015625 is the 44125-th square number.

1947015625 is the 22063-rd centered octagonal number.

It is an amenable number.

1947015625 is a deficient number, since it is larger than the sum of its proper divisors (493636728).

1947015625 is an frugal number, since it uses more digits than its factorization.

1947015625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The cubic root of 1947015625 is about 1248.6953053580.

The spelling of 1947015625 in words is "one billion, nine hundred forty-seven million, fifteen thousand, six hundred twenty-five".