225255451315421 has 24 divisors (see below), whose sum is σ = 240470692432320. Its totient is φ = 210957378573312.

The previous prime is 225255451315403. The next prime is 225255451315457. The reversal of 225255451315421 is 124513154552522.

It is a de Polignac number, because none of the positive numbers 2^k-225255451315421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225255451315021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45052160 + ... + 49801686.

It is an arithmetic number, because the mean of its divisors is an integer number (10019612184680).

Almost surely, 2^{225255451315421} is an apocalyptic number.

It is an amenable number.

225255451315421 is a deficient number, since it is larger than the sum of its proper divisors (15215241116899).

225255451315421 is a wasteful number, since it uses less digits than its factorization.

225255451315421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750373 (or 4750356 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 47.

The spelling of 225255451315421 in words is "two hundred twenty-five trillion, two hundred fifty-five billion, four hundred fifty-one million, three hundred fifteen thousand, four hundred twenty-one".