25479340 has 24 divisors (see below), whose sum is σ = 54154800. Its totient is φ = 10068288.

The previous prime is 25479329. The next prime is 25479343. The reversal of 25479340 is 4397452.

It is a junction number, because it is equal to n+sod(n) for n = 25479296 and 25479305.

It is not an unprimeable number, because it can be changed into a prime (25479343) 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, 6015 + ... + 9334.

It is an arithmetic number, because the mean of its divisors is an integer number (2256450).

Almost surely, 2^25479340 is an apocalyptic number.

25479340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25479340 is an abundant number, since it is smaller than the sum of its proper divisors (28675460).

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

25479340 is a wasteful number, since it uses less digits than its factorization.

25479340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441 (or 15439 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25479340 is about 5047.7064098460. The cubic root of 25479340 is about 294.2587537973.

The spelling of 25479340 in words is "twenty-five million, four hundred seventy-nine thousand, three hundred forty".