225197702500 has 45 divisors (see below), whose sum is σ = 492514228591. Its totient is φ = 90069590000.

The previous prime is 225197702489. The next prime is 225197702501. The reversal of 225197702500 is 5207791522.

The square root of 225197702500 is 474550.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17655499876 + 207542202624 = 132874^2 + 455568^2 .

It is a super-2 number, since 2×225197702500² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225197702501) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 23722755 + ... + 23732245.

Almost surely, 2^225197702500 is an apocalyptic number.

225197702500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

225197702500 is the 474550-th square number.

It is an amenable number.

225197702500 is an abundant number, since it is smaller than the sum of its proper divisors (267316526091).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225197702500 is an frugal number, since it uses more digits than its factorization.

225197702500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19006 (or 9498 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 225197702500 in words is "two hundred twenty-five billion, one hundred ninety-seven million, seven hundred two thousand, five hundred".