25244021012 has 24 divisors (see below), whose sum is σ = 50491413504. Its totient is φ = 10818143712.

The previous prime is 25244021003. The next prime is 25244021027. The reversal of 25244021012 is 21012044252.

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, 766958 + ... + 799194.

It is an arithmetic number, because the mean of its divisors is an integer number (2103808896).

Almost surely, 2^25244021012 is an apocalyptic number.

It is an amenable number.

25244021012 is an abundant number, since it is smaller than the sum of its proper divisors (25247392492).

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

25244021012 is a wasteful number, since it uses less digits than its factorization.

25244021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60215 (or 60213 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 25244021012 its reverse (21012044252), we get a palindrome (46256065264).

The spelling of 25244021012 in words is "twenty-five billion, two hundred forty-four million, twenty-one thousand, twelve".