255898401 has 16 divisors (see below), whose sum is σ = 382277568. Its totient is φ = 150897600.

The previous prime is 255898381. The next prime is 255898421. The reversal of 255898401 is 104898552.

Added to its reverse (104898552) it gives a triangular number (360796953 = T₂₆₈₆₂).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255898381) and next prime (255898421).

It is not a de Polignac number, because 255898401 - 2⁶ = 255898337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255898421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103570 + ... + 106011.

It is an arithmetic number, because the mean of its divisors is an integer number (23892348).

Almost surely, 2^255898401 is an apocalyptic number.

It is an amenable number.

255898401 is a deficient number, since it is larger than the sum of its proper divisors (126379167).

255898401 is a wasteful number, since it uses less digits than its factorization.

255898401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209632.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 255898401 is about 15996.8247161741. The cubic root of 255898401 is about 634.8764105270.

Adding to 255898401 its reverse (104898552), we get a triangular number (360796953 = T₂₆₈₆₂).

The spelling of 255898401 in words is "two hundred fifty-five million, eight hundred ninety-eight thousand, four hundred one".