9877411837225 has 27 divisors (see below), whose sum is σ = 12804133631653. Its totient is φ = 7558090749440.

The previous prime is 9877411837219. The next prime is 9877411837229. The reversal of 9877411837225 is 5227381147789.

The square root of 9877411837225 is 3142835.

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

It can be written as a sum of positive squares in 4 ways, for example, as 265502142361 + 9611909694864 = 515269^2 + 3100308^2 .

It is not a de Polignac number, because 9877411837225 - 2³ = 9877411837217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9877411837229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 361412361 + ... + 361439689.

Almost surely, 2^{9877411837225} is an apocalyptic number.

9877411837225 is the 3142835-th square number.

9877411837225 is the 1571418-th centered octagonal number.

It is an amenable number.

9877411837225 is a deficient number, since it is larger than the sum of its proper divisors (2926721794428).

9877411837225 is an frugal number, since it uses more digits than its factorization.

9877411837225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54714 (or 27357 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 64.

Multiplying 9877411837225 by its sum of digits (64), we get a square (632154357582400 = 25142680²).

The spelling of 9877411837225 in words is "nine trillion, eight hundred seventy-seven billion, four hundred eleven million, eight hundred thirty-seven thousand, two hundred twenty-five".