25707020 has 12 divisors (see below), whose sum is σ = 53984784. Its totient is φ = 10282800.

The previous prime is 25707013. The next prime is 25707053. The reversal of 25707020 is 2070752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642656 + ... + 642695.

It is an arithmetic number, because the mean of its divisors is an integer number (4498732).

Almost surely, 2^25707020 is an apocalyptic number.

25707020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25707020 is an abundant number, since it is smaller than the sum of its proper divisors (28277764).

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

25707020 is a wasteful number, since it uses less digits than its factorization.

25707020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285360 (or 1285358 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 25707020 is about 5070.2090686677. The cubic root of 25707020 is about 295.1326416820.

Adding to 25707020 its reverse (2070752), we get a palindrome (27777772).

The spelling of 25707020 in words is "twenty-five million, seven hundred seven thousand, twenty".