25016666280 has 64 divisors (see below), whose sum is σ = 75386626560. Its totient is φ = 6641188608.

The previous prime is 25016666267. The next prime is 25016666321. The reversal of 25016666280 is 8266661052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440667 + ... + 494186.

It is an arithmetic number, because the mean of its divisors is an integer number (1177916040).

Almost surely, 2^25016666280 is an apocalyptic number.

25016666280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25016666280 is an abundant number, since it is smaller than the sum of its proper divisors (50369960280).

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

25016666280 is a wasteful number, since it uses less digits than its factorization.

25016666280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935090 (or 935086 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 25016666280 in words is "twenty-five billion, sixteen million, six hundred sixty-six thousand, two hundred eighty".