25742920 has 32 divisors (see below), whose sum is σ = 66196800. Its totient is φ = 8826048.

The previous prime is 25742909. The next prime is 25742963. The reversal of 25742920 is 2924752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45690 + ... + 46249.

It is an arithmetic number, because the mean of its divisors is an integer number (2068650).

Almost surely, 2^25742920 is an apocalyptic number.

25742920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25742920 is an abundant number, since it is smaller than the sum of its proper divisors (40453880).

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

25742920 is a wasteful number, since it uses less digits than its factorization.

25742920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91957 (or 91953 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25742920 is about 5073.7481214581. The cubic root of 25742920 is about 295.2699625843.

It can be divided in two parts, 25742 and 920, that added together give a palindrome (26662).

The spelling of 25742920 in words is "twenty-five million, seven hundred forty-two thousand, nine hundred twenty".