25656498 has 72 divisors (see below), whose sum is σ = 68112720. Its totient is φ = 6940080.

The previous prime is 25656487. The next prime is 25656541. The reversal of 25656498 is 89465652.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15993 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (946010).

Almost surely, 2^25656498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25656498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34056360).

25656498 is an abundant number, since it is smaller than the sum of its proper divisors (42456222).

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

25656498 is a wasteful number, since it uses less digits than its factorization.

25656498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1562 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 25656498 is about 5065.2243780508. The cubic root of 25656498 is about 294.9391735166.

The spelling of 25656498 in words is "twenty-five million, six hundred fifty-six thousand, four hundred ninety-eight".