654294943225 has 135 divisors (see below), whose sum is σ = 1043623181055. Its totient is φ = 405736716000.

The previous prime is 654294943223. The next prime is 654294943231. The reversal of 654294943225 is 522349492456.

The square root of 654294943225 is 808885.

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., 235546179561 + 418748763664 = 485331^2 + 647108^2 .

It is not a de Polignac number, because 654294943225 - 2¹ = 654294943223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

Its product of digits (18662400) is a multiple of the sum of its prime factors (450).

It is not an unprimeable number, because it can be changed into a prime (654294943223) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 3425627880 + ... + 3425628070.

Almost surely, 2^654294943225 is an apocalyptic number.

654294943225 is the 808885-th square number.

654294943225 is the 404443-rd centered octagonal number.

It is an amenable number.

654294943225 is a deficient number, since it is larger than the sum of its proper divisors (389328237830).

654294943225 is an frugal number, since it uses more digits than its factorization.

654294943225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 214 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 55.

The spelling of 654294943225 in words is "six hundred fifty-four billion, two hundred ninety-four million, nine hundred forty-three thousand, two hundred twenty-five".