109154248225 has 27 divisors (see below), whose sum is σ = 148799305011. Its totient is φ = 79371692400.

The previous prime is 109154248219. The next prime is 109154248237. The reversal of 109154248225 is 522842451901.

The square root of 109154248225 is 330385.

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

It can be written as a sum of positive squares in only one way, i.e., 39295529361 + 69858718864 = 198231^2 + 264308^2 .

It is not a de Polignac number, because 109154248225 - 2¹⁷ = 109154117153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18168172 + ... + 18174178.

Almost surely, 2^109154248225 is an apocalyptic number.

109154248225 is the 330385-th square number.

109154248225 is the 165193-rd centered octagonal number.

It is an amenable number.

109154248225 is a deficient number, since it is larger than the sum of its proper divisors (39645056786).

109154248225 is an frugal number, since it uses more digits than its factorization.

109154248225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12046 (or 6023 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 109154248225 in words is "one hundred nine billion, one hundred fifty-four million, two hundred forty-eight thousand, two hundred twenty-five".