25654274453 has 4 divisors (see below), whose sum is σ = 26347633260. Its totient is φ = 24960915648.

The previous prime is 25654274431. The next prime is 25654274479. The reversal of 25654274453 is 35447245652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11393854564 + 14260419889 = 106742^2 + 119417^2 .

It is a cyclic number.

It is not a de Polignac number, because 25654274453 - 2⁸ = 25654274197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25654274398 and 25654274407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25654274423) 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 3 ways as a sum of consecutive naturals, for example, 346679348 + ... + 346679421.

It is an arithmetic number, because the mean of its divisors is an integer number (6586908315).

Almost surely, 2^25654274453 is an apocalyptic number.

It is an amenable number.

25654274453 is a deficient number, since it is larger than the sum of its proper divisors (693358807).

25654274453 is an equidigital number, since it uses as much as digits as its factorization.

25654274453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693358806.

The product of its digits is 4032000, while the sum is 47.

The spelling of 25654274453 in words is "twenty-five billion, six hundred fifty-four million, two hundred seventy-four thousand, four hundred fifty-three".