25285020 has 24 divisors (see below), whose sum is σ = 70798224. Its totient is φ = 6742656.

The previous prime is 25285009. The next prime is 25285031. The reversal of 25285020 is 2058252.

It is an interprime number because it is at equal distance from previous prime (25285009) and next prime (25285031).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210649 + ... + 210768.

It is an arithmetic number, because the mean of its divisors is an integer number (2949926).

Almost surely, 2^25285020 is an apocalyptic number.

25285020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25285020 is an abundant number, since it is smaller than the sum of its proper divisors (45513204).

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

25285020 is a wasteful number, since it uses less digits than its factorization.

25285020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421429 (or 421427 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 25285020 is about 5028.4212234060. The cubic root of 25285020 is about 293.5087822065.

The spelling of 25285020 in words is "twenty-five million, two hundred eighty-five thousand, twenty".