254372740221 has 32 divisors (see below), whose sum is σ = 367446758400. Its totient is φ = 156029448960.

The previous prime is 254372740217. The next prime is 254372740231. The reversal of 254372740221 is 122047273452.

It is not a de Polignac number, because 254372740221 - 2² = 254372740217 is a prime.

It is a super-2 number, since 2×254372740221² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 254372740221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254372740231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197916 + ... + 740213.

It is an arithmetic number, because the mean of its divisors is an integer number (11482711200).

Almost surely, 2^254372740221 is an apocalyptic number.

It is an amenable number.

254372740221 is a deficient number, since it is larger than the sum of its proper divisors (113074018179).

254372740221 is a wasteful number, since it uses less digits than its factorization.

254372740221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938289.

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 254372740221 in words is "two hundred fifty-four billion, three hundred seventy-two million, seven hundred forty thousand, two hundred twenty-one".