25244613220 has 24 divisors (see below), whose sum is σ = 53019376704. Its totient is φ = 10096761696.

The previous prime is 25244613197. The next prime is 25244613223. The reversal of 25244613220 is 2231644252.

It is not an unprimeable number, because it can be changed into a prime (25244613223) 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, 138649 + ... + 264031.

It is an arithmetic number, because the mean of its divisors is an integer number (2209140696).

Almost surely, 2^25244613220 is an apocalyptic number.

25244613220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25244613220 is an abundant number, since it is smaller than the sum of its proper divisors (27774763484).

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

25244613220 is a wasteful number, since it uses less digits than its factorization.

25244613220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135459 (or 135457 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 25244613220 in words is "twenty-five billion, two hundred forty-four million, six hundred thirteen thousand, two hundred twenty".