25151313220 has 24 divisors (see below), whose sum is σ = 57619372608. Its totient is φ = 9145932000.

The previous prime is 25151313217. The next prime is 25151313241. The reversal of 25151313220 is 2231315152.

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, 57161856 + ... + 57162295.

It is an arithmetic number, because the mean of its divisors is an integer number (2400807192).

Almost surely, 2^25151313220 is an apocalyptic number.

25151313220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25151313220 is an abundant number, since it is smaller than the sum of its proper divisors (32468059388).

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

25151313220 is a wasteful number, since it uses less digits than its factorization.

25151313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114324171 (or 114324169 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 25151313220 its reverse (2231315152), we get a palindrome (27382628372).

The spelling of 25151313220 in words is "twenty-five billion, one hundred fifty-one million, three hundred thirteen thousand, two hundred twenty".