123455098771225 has 81 divisors (see below), whose sum is σ = 169414419203127. Its totient is φ = 89202588958080.

The previous prime is 123455098771223. The next prime is 123455098771321. The reversal of 123455098771225 is 522177890554321.

The square root of 123455098771225 is 11111035.

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

It can be written as a sum of positive squares in 13 ways, for example, as 107463513664521 + 15991585106704 = 10366461^2 + 3998948^2 .

It is not a de Polignac number, because 123455098771225 - 2¹ = 123455098771223 is a prime.

It is a super-2 number, since 2×123455098771225² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123455098771223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 33944210107 + ... + 33944213743.

Almost surely, 2^{123455098771225} is an apocalyptic number.

123455098771225 is the 11111035-th square number.

123455098771225 is the 5555518-th centered octagonal number.

It is an amenable number.

123455098771225 is a deficient number, since it is larger than the sum of its proper divisors (45959320431902).

123455098771225 is an frugal number, since it uses more digits than its factorization.

123455098771225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404 (or 3702 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 61.

The spelling of 123455098771225 in words is "one hundred twenty-three trillion, four hundred fifty-five billion, ninety-eight million, seven hundred seventy-one thousand, two hundred twenty-five".