25255388780355 has 16 divisors (see below), whose sum is σ = 40409023509504. Its totient is φ = 13469406862560.

The previous prime is 25255388780353. The next prime is 25255388780389. The reversal of 25255388780355 is 55308788355252.

It is a happy number.

It is not a de Polignac number, because 25255388780355 - 2¹ = 25255388780353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25255388780353) 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, 6794131 + ... + 9832140.

It is an arithmetic number, because the mean of its divisors is an integer number (2525563969344).

Almost surely, 2^{25255388780355} is an apocalyptic number.

25255388780355 is a deficient number, since it is larger than the sum of its proper divisors (15153634729149).

25255388780355 is a wasteful number, since it uses less digits than its factorization.

25255388780355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16727546.

The product of its (nonzero) digits is 403200000, while the sum is 66.

The spelling of 25255388780355 in words is "twenty-five trillion, two hundred fifty-five billion, three hundred eighty-eight million, seven hundred eighty thousand, three hundred fifty-five".