25940420 has 24 divisors (see below), whose sum is σ = 59427648. Its totient is φ = 9432800.

The previous prime is 25940417. The next prime is 25940423. The reversal of 25940420 is 2404952.

It is an interprime number because it is at equal distance from previous prime (25940417) and next prime (25940423).

It is a self number, because there is not a number n which added to its sum of digits gives 25940420.

It is not an unprimeable number, because it can be changed into a prime (25940423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58736 + ... + 59175.

It is an arithmetic number, because the mean of its divisors is an integer number (2476152).

Almost surely, 2^25940420 is an apocalyptic number.

25940420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25940420 is an abundant number, since it is smaller than the sum of its proper divisors (33487228).

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

25940420 is a wasteful number, since it uses less digits than its factorization.

25940420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117931 (or 117929 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25940420 is about 5093.1738631231. The cubic root of 25940420 is about 296.0231446475.

The spelling of 25940420 in words is "twenty-five million, nine hundred forty thousand, four hundred twenty".