124011275521225 has 9 divisors (see below), whose sum is σ = 153774050689767. Its totient is φ = 99208975872840.

The previous prime is 124011275521181. The next prime is 124011275521261. The reversal of 124011275521225 is 522125572110421.

The square root of 124011275521225 is 11136035.

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., 44644059187641 + 79367216333584 = 6681621^2 + 8908828^2 .

It is not a de Polignac number, because 124011275521225 - 2¹³ = 124011275513033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54566572 + ... + 56793778.

Almost surely, 2^{124011275521225} is an apocalyptic number.

124011275521225 is the 11136035-th square number.

124011275521225 is the 5568018-th centered octagonal number.

It is an amenable number.

124011275521225 is a deficient number, since it is larger than the sum of its proper divisors (29762775168542).

124011275521225 is an frugal number, since it uses more digits than its factorization.

124011275521225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454424 (or 2227212 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 124011275521225 in words is "one hundred twenty-four trillion, eleven billion, two hundred seventy-five million, five hundred twenty-one thousand, two hundred twenty-five".