25436940 has 24 divisors (see below), whose sum is σ = 71223600. Its totient is φ = 6783168.

The previous prime is 25436911. The next prime is 25436959. The reversal of 25436940 is 4963452.

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, 211915 + ... + 212034.

It is an arithmetic number, because the mean of its divisors is an integer number (2967650).

Almost surely, 2^25436940 is an apocalyptic number.

25436940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25436940 is an abundant number, since it is smaller than the sum of its proper divisors (45786660).

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

25436940 is a wasteful number, since it uses less digits than its factorization.

25436940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423961 (or 423959 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25436940 is about 5043.5047338136. The cubic root of 25436940 is about 294.0954384956.

The spelling of 25436940 in words is "twenty-five million, four hundred thirty-six thousand, nine hundred forty".