25180120872 has 96 divisors (see below), whose sum is σ = 71288942400. Its totient is φ = 8014034688.

The previous prime is 25180120837. The next prime is 25180120897. The reversal of 25180120872 is 27802108152.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 928903 + ... + 955625.

It is an arithmetic number, because the mean of its divisors is an integer number (742593150).

Almost surely, 2^25180120872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25180120872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35644471200).

25180120872 is an abundant number, since it is smaller than the sum of its proper divisors (46108821528).

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

25180120872 is a wasteful number, since it uses less digits than its factorization.

25180120872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27327 (or 27320 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 25180120872 in words is "twenty-five billion, one hundred eighty million, one hundred twenty thousand, eight hundred seventy-two".