265653331662225 has 48 divisors (see below), whose sum is σ = 473001782323392. Its totient is φ = 130782454383360.

The previous prime is 265653331662221. The next prime is 265653331662319. The reversal of 265653331662225 is 522266133356562.

It is a happy number.

It is not a de Polignac number, because 265653331662225 - 2² = 265653331662221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265653331662221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203824474 + ... + 205123676.

It is an arithmetic number, because the mean of its divisors is an integer number (9854203798404).

Almost surely, 2^{265653331662225} is an apocalyptic number.

265653331662225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265653331662225 is a deficient number, since it is larger than the sum of its proper divisors (207348450661167).

265653331662225 is a wasteful number, since it uses less digits than its factorization.

265653331662225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508946 (or 1508941 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 57.

The spelling of 265653331662225 in words is "two hundred sixty-five trillion, six hundred fifty-three billion, three hundred thirty-one million, six hundred sixty-two thousand, two hundred twenty-five".