25455454 has 4 divisors (see below), whose sum is σ = 38183184. Its totient is φ = 12727726.

The previous prime is 25455449. The next prime is 25455461. The reversal of 25455454 is 45455452.

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

It is a super-2 number, since 2×25455454² = 1295960276692232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6363862 + ... + 6363865.

It is an arithmetic number, because the mean of its divisors is an integer number (9545796).

Almost surely, 2^25455454 is an apocalyptic number.

25455454 is a deficient number, since it is larger than the sum of its proper divisors (12727730).

25455454 is a wasteful number, since it uses less digits than its factorization.

25455454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12727729.

The product of its digits is 80000, while the sum is 34.

The square root of 25455454 is about 5045.3398299817. The cubic root of 25455454 is about 294.1667725801.

The spelling of 25455454 in words is "twenty-five million, four hundred fifty-five thousand, four hundred fifty-four".