9513739269225 has 45 divisors (see below), whose sum is σ = 17622990935143. Its totient is φ = 5073920250480.

The previous prime is 9513739269191. The next prime is 9513739269233. The reversal of 9513739269225 is 5229629373159.

It is a happy number.

The square root of 9513739269225 is 3084435.

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

9513739269225 is a `hidden beast` number, since 9 + 5 + 13 + 7 + 392 + 6 + 9 + 225 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3424946136921 + 6088793132304 = 1850661^2 + 2467548^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 9513739269225 - 2²¹ = 9513737172073 is a prime.

It is a super-2 number, since 2×9513739269225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 138765304 + ... + 138833846.

Almost surely, 2^{9513739269225} is an apocalyptic number.

9513739269225 is the 3084435-th square number.

9513739269225 is the 1542218-th centered octagonal number.

It is an amenable number.

9513739269225 is a deficient number, since it is larger than the sum of its proper divisors (8109251665918).

9513739269225 is an frugal number, since it uses more digits than its factorization.

9513739269225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137108 (or 68551 counting only the distinct ones).

The product of its digits is 55112400, while the sum is 63.

The spelling of 9513739269225 in words is "nine trillion, five hundred thirteen billion, seven hundred thirty-nine million, two hundred sixty-nine thousand, two hundred twenty-five".