25654540 has 24 divisors (see below), whose sum is σ = 54204192. Its totient is φ = 10199040.

The previous prime is 25654529. The next prime is 25654543. The reversal of 25654540 is 4545652.

It is a super-2 number, since 2×25654540² = 1316310845223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25654543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (2258508).

Almost surely, 2^25654540 is an apocalyptic number.

25654540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25654540 is an abundant number, since it is smaller than the sum of its proper divisors (28549652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25654540 is a wasteful number, since it uses less digits than its factorization.

25654540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857 (or 7855 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 25654540 is about 5065.0310956597. The cubic root of 25654540 is about 294.9316704714.

The spelling of 25654540 in words is "twenty-five million, six hundred fifty-four thousand, five hundred forty".