25552755712 has 88 divisors (see below), whose sum is σ = 55961410032. Its totient is φ = 11565465600.

The previous prime is 25552755689. The next prime is 25552755713. The reversal of 25552755712 is 21755725552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552755713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2709918 + ... + 2719330.

It is an arithmetic number, because the mean of its divisors is an integer number (635925114).

Almost surely, 2^25552755712 is an apocalyptic number.

25552755712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25552755712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27980705016).

25552755712 is an abundant number, since it is smaller than the sum of its proper divisors (30408654320).

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

25552755712 is a wasteful number, since it uses less digits than its factorization.

25552755712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9685 (or 9667 counting only the distinct ones).

The product of its digits is 1225000, while the sum is 46.

The spelling of 25552755712 in words is "twenty-five billion, five hundred fifty-two million, seven hundred fifty-five thousand, seven hundred twelve".