25455451 has 6 divisors (see below), whose sum is σ = 29611500. Its totient is φ = 21818916.

The previous prime is 25455449. The next prime is 25455461. The reversal of 25455451 is 15455452.

It is not a de Polignac number, because 25455451 - 2¹ = 25455449 is a prime.

It is a super-2 number, since 2×25455451² = 1295959971226802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25455401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259701 + ... + 259798.

It is an arithmetic number, because the mean of its divisors is an integer number (4935250).

Almost surely, 2^25455451 is an apocalyptic number.

25455451 is a deficient number, since it is larger than the sum of its proper divisors (4156049).

25455451 is an equidigital number, since it uses as much as digits as its factorization.

25455451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519513 (or 519506 counting only the distinct ones).

The product of its digits is 20000, while the sum is 31.

The square root of 25455451 is about 5045.3395326777. The cubic root of 25455451 is about 294.1667610240.

Subtracting from 25455451 its reverse (15455452), we obtain a palindrome (9999999).

The spelling of 25455451 in words is "twenty-five million, four hundred fifty-five thousand, four hundred fifty-one".