25565227730454 has 32 divisors (see below), whose sum is σ = 52347650471424. Its totient is φ = 8319089731680.

The previous prime is 25565227730429. The next prime is 25565227730459. The reversal of 25565227730454 is 45403772256552.

It is a super-2 number, since 2×25565227730454² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25565227730394 and 25565227730403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25565227730459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26142654 + ... + 27102929.

It is an arithmetic number, because the mean of its divisors is an integer number (1635864077232).

Almost surely, 2^{25565227730454} is an apocalyptic number.

25565227730454 is an abundant number, since it is smaller than the sum of its proper divisors (26782422740970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25565227730454 is a wasteful number, since it uses less digits than its factorization.

25565227730454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53247492.

The product of its (nonzero) digits is 70560000, while the sum is 57.

The spelling of 25565227730454 in words is "twenty-five trillion, five hundred sixty-five billion, two hundred twenty-seven million, seven hundred thirty thousand, four hundred fifty-four".