25325577780 has 24 divisors (see below), whose sum is σ = 70911617952. Its totient is φ = 6753487392.

The previous prime is 25325577749. The next prime is 25325577787. The reversal of 25325577780 is 8777552352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25325577787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211046422 + ... + 211046541.

It is an arithmetic number, because the mean of its divisors is an integer number (2954650748).

Almost surely, 2^25325577780 is an apocalyptic number.

25325577780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25325577780 is an abundant number, since it is smaller than the sum of its proper divisors (45586040172).

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

25325577780 is a wasteful number, since it uses less digits than its factorization.

25325577780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422092975 (or 422092973 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 25325577780 in words is "twenty-five billion, three hundred twenty-five million, five hundred seventy-seven thousand, seven hundred eighty".