25654478 has 4 divisors (see below), whose sum is σ = 38481720. Its totient is φ = 12827238.

The previous prime is 25654469. The next prime is 25654487. The reversal of 25654478 is 87445652.

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

It is an interprime number because it is at equal distance from previous prime (25654469) and next prime (25654487).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6413618 + ... + 6413621.

It is an arithmetic number, because the mean of its divisors is an integer number (9620430).

Almost surely, 2^25654478 is an apocalyptic number.

25654478 is a deficient number, since it is larger than the sum of its proper divisors (12827242).

25654478 is a wasteful number, since it uses less digits than its factorization.

25654478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827241.

The product of its digits is 268800, while the sum is 41.

The square root of 25654478 is about 5065.0249752593. The cubic root of 25654478 is about 294.9314328815.

The spelling of 25654478 in words is "twenty-five million, six hundred fifty-four thousand, four hundred seventy-eight".