25066637620 has 48 divisors (see below), whose sum is σ = 52846940160. Its totient is φ = 9987301376.

The previous prime is 25066637611. The next prime is 25066637621. The reversal of 25066637620 is 2673666052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25066637621) 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, 7528116 + ... + 7531444.

It is an arithmetic number, because the mean of its divisors is an integer number (1100977920).

Almost surely, 2^25066637620 is an apocalyptic number.

25066637620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25066637620 is an abundant number, since it is smaller than the sum of its proper divisors (27780302540).

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

25066637620 is a wasteful number, since it uses less digits than its factorization.

25066637620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 25066637620 in words is "twenty-five billion, sixty-six million, six hundred thirty-seven thousand, six hundred twenty".