25093640 has 128 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 8140800.

The previous prime is 25093603. The next prime is 25093669. The reversal of 25093640 is 4639052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234467 + ... + 234573.

It is an arithmetic number, because the mean of its divisors is an integer number (535815).

Almost surely, 2^25093640 is an apocalyptic number.

25093640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25093640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292160).

25093640 is an abundant number, since it is smaller than the sum of its proper divisors (43490680).

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

25093640 is a wasteful number, since it uses less digits than its factorization.

25093640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 25093640 is about 5009.3552479336. The cubic root of 25093640 is about 292.7663923225.

It can be divided in two parts, 250936 and 40, that multiplied together give a triangular number (10037440 = T₄₄₈₀).

The spelling of 25093640 in words is "twenty-five million, ninety-three thousand, six hundred forty".