25267146780 has 24 divisors (see below), whose sum is σ = 70748011152. Its totient is φ = 6737905792.

The previous prime is 25267146763. The next prime is 25267146799. The reversal of 25267146780 is 8764176252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210559497 + ... + 210559616.

It is an arithmetic number, because the mean of its divisors is an integer number (2947833798).

Almost surely, 2^25267146780 is an apocalyptic number.

25267146780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25267146780 is an abundant number, since it is smaller than the sum of its proper divisors (45480864372).

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

25267146780 is a wasteful number, since it uses less digits than its factorization.

25267146780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421119125 (or 421119123 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 25267146780 in words is "twenty-five billion, two hundred sixty-seven million, one hundred forty-six thousand, seven hundred eighty".