25028025280 has 28 divisors (see below), whose sum is σ = 59597985960. Its totient is φ = 10011209984.

The previous prime is 25028025271. The next prime is 25028025283. The reversal of 25028025280 is 8252082052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25028025283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39105970 + ... + 39106609.

Almost surely, 2^25028025280 is an apocalyptic number.

25028025280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25028025280 is an abundant number, since it is smaller than the sum of its proper divisors (34569960680).

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

25028025280 is an equidigital number, since it uses as much as digits as its factorization.

25028025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78212596 (or 78212586 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The spelling of 25028025280 in words is "twenty-five billion, twenty-eight million, twenty-five thousand, two hundred eighty".