877004155225 has 27 divisors (see below), whose sum is σ = 1195405126111. Its totient is φ = 637783744400.

The previous prime is 877004155217. The next prime is 877004155241. The reversal of 877004155225 is 522551400778.

It is a happy number.

The square root of 877004155225 is 936485.

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., 315721495881 + 561282659344 = 561891^2 + 749188^2 .

It is not a de Polignac number, because 877004155225 - 2³ = 877004155217 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, 51498162 + ... + 51515188.

Almost surely, 2^877004155225 is an apocalyptic number.

877004155225 is the 936485-th square number.

877004155225 is the 468243-rd centered octagonal number.

It is an amenable number.

877004155225 is a deficient number, since it is larger than the sum of its proper divisors (318400970886).

877004155225 is an frugal number, since it uses more digits than its factorization.

877004155225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34086 (or 17043 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 46.

The spelling of 877004155225 in words is "eight hundred seventy-seven billion, four million, one hundred fifty-five thousand, two hundred twenty-five".