25239323280 has 80 divisors (see below), whose sum is σ = 78259366080. Its totient is φ = 6728984064.

The previous prime is 25239323279. The next prime is 25239323281. The reversal of 25239323280 is 8232393252.

It is an interprime number because it is at equal distance from previous prime (25239323279) and next prime (25239323281).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (25239323281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438239 + ... + 1455681.

It is an arithmetic number, because the mean of its divisors is an integer number (978242076).

Almost surely, 2^25239323280 is an apocalyptic number.

25239323280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25239323280 is an abundant number, since it is smaller than the sum of its proper divisors (53020042800).

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

25239323280 is a wasteful number, since it uses less digits than its factorization.

25239323280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23488 (or 23482 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 25239323280 in words is "twenty-five billion, two hundred thirty-nine million, three hundred twenty-three thousand, two hundred eighty".