225187725025 has 12 divisors (see below), whose sum is σ = 279248373612. Its totient is φ = 180140119040.

The previous prime is 225187725023. The next prime is 225187725173. The reversal of 225187725025 is 520527781522.

It can be written as a sum of positive squares in 6 ways, for example, as 292683664 + 224895041361 = 17108^2 + 474231^2 .

It is not a de Polignac number, because 225187725025 - 2¹ = 225187725023 is a prime.

It is a super-2 number, since 2×225187725025² (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 (225187725023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222597 + ... + 707053.

It is an arithmetic number, because the mean of its divisors is an integer number (23270697801).

Almost surely, 2^225187725025 is an apocalyptic number.

225187725025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225187725025 is a deficient number, since it is larger than the sum of its proper divisors (54060648587).

225187725025 is a wasteful number, since it uses less digits than its factorization.

225187725025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503060 (or 503055 counting only the distinct ones).

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

The spelling of 225187725025 in words is "two hundred twenty-five billion, one hundred eighty-seven million, seven hundred twenty-five thousand, twenty-five".