25553553451 has 4 divisors (see below), whose sum is σ = 27056703672. Its totient is φ = 24050403232.

The previous prime is 25553553341. The next prime is 25553553457. The reversal of 25553553451 is 15435535552.

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

It is a cyclic number.

It is not a de Polignac number, because 25553553451 - 2⁷ = 25553553323 is a prime.

It is a super-2 number, since 2×25553553451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25553553398 and 25553553407.

It is not an unprimeable number, because it can be changed into a prime (25553553457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751575085 + ... + 751575118.

It is an arithmetic number, because the mean of its divisors is an integer number (6764175918).

Almost surely, 2^25553553451 is an apocalyptic number.

25553553451 is a deficient number, since it is larger than the sum of its proper divisors (1503150221).

25553553451 is a wasteful number, since it uses less digits than its factorization.

25553553451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503150220.

The product of its digits is 1125000, while the sum is 43.

The spelling of 25553553451 in words is "twenty-five billion, five hundred fifty-three million, five hundred fifty-three thousand, four hundred fifty-one".