654592225 has 81 divisors (see below), whose sum is σ = 1026893817. Its totient is φ = 412634880.

The previous prime is 654592223. The next prime is 654592231. The reversal of 654592225 is 522295456.

The square root of 654592225 is 25585.

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

It can be written as a sum of positive squares in 4 ways, for example, as 15311569 + 639280656 = 3913^2 + 25284^2 .

It is not a de Polignac number, because 654592225 - 2¹ = 654592223 is a prime.

It is a Duffinian number.

Its product of digits (216000) is a multiple of the sum of its prime divisors (72).

It is not an unprimeable number, because it can be changed into a prime (654592223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 15223054 + ... + 15223096.

Almost surely, 2^654592225 is an apocalyptic number.

654592225 is the 25585-th square number.

654592225 is the 12793-rd centered octagonal number.

It is an amenable number.

654592225 is a deficient number, since it is larger than the sum of its proper divisors (372301592).

654592225 is a wasteful number, since it uses less digits than its factorization.

654592225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 72 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The cubic root of 654592225 is about 868.2743019647.

The spelling of 654592225 in words is "six hundred fifty-four million, five hundred ninety-two thousand, two hundred twenty-five".