254921990404 has 9 divisors (see below), whose sum is σ = 446115250357. Its totient is φ = 127460490304.

The previous prime is 254921990371. The next prime is 254921990419. The reversal of 254921990404 is 404099129452.

The square root of 254921990404 is 504898.

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

It can be written as a sum of positive squares in only one way, i.e., 47350630404 + 207571360000 = 217602^2 + 455600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 883572 + ... + 1136020.

Almost surely, 2^254921990404 is an apocalyptic number.

254921990404 is the 504898-th square number.

It is an amenable number.

254921990404 is a deficient number, since it is larger than the sum of its proper divisors (191193259953).

254921990404 is an frugal number, since it uses more digits than its factorization.

254921990404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504902 (or 252451 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 254921990404 by its sum of digits (49), we get a square (12491177529796 = 3534286²).

The spelling of 254921990404 in words is "two hundred fifty-four billion, nine hundred twenty-one million, nine hundred ninety thousand, four hundred four".