223402749025 has 9 divisors (see below), whose sum is σ = 277022339283. Its totient is φ = 178720308600.

The previous prime is 223402749019. The next prime is 223402749047. The reversal of 223402749025 is 520947204322.

The square root of 223402749025 is 472655.

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., 80424989649 + 142977759376 = 283593^2 + 378124^2 .

It is not a de Polignac number, because 223402749025 - 2²⁹ = 222865878113 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, 2316010 + ... + 2410540.

Almost surely, 2^223402749025 is an apocalyptic number.

223402749025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

223402749025 is the 472655-th square number.

223402749025 is the 236328-th centered octagonal number.

It is an amenable number.

223402749025 is a deficient number, since it is larger than the sum of its proper divisors (53619590258).

223402749025 is an frugal number, since it uses more digits than its factorization.

223402749025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189072 (or 94536 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 223402749025 in words is "two hundred twenty-three billion, four hundred two million, seven hundred forty-nine thousand, twenty-five".