25802530 has 64 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 9008640.

The previous prime is 25802521. The next prime is 25802531. The reversal of 25802530 is 3520852.

It is a junction number, because it is equal to n+sod(n) for n = 25802495 and 25802504.

It is not an unprimeable number, because it can be changed into a prime (25802531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250459 + ... + 250561.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 2^25802530 is an apocalyptic number.

25802530 is an abundant number, since it is smaller than the sum of its proper divisors (27032798).

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

25802530 is a wasteful number, since it uses less digits than its factorization.

25802530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25802530 is about 5079.6190802067. The cubic root of 25802530 is about 295.4976947703.

The spelling of 25802530 in words is "twenty-five million, eight hundred two thousand, five hundred thirty".