25437122340 has 96 divisors (see below), whose sum is σ = 81608567040. Its totient is φ = 5799215616.

The previous prime is 25437122257. The next prime is 25437122369. The reversal of 25437122340 is 4322173452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85534 + ... + 241226.

It is an arithmetic number, because the mean of its divisors is an integer number (850089240).

Almost surely, 2^25437122340 is an apocalyptic number.

25437122340 is a gapful number since it is divisible by the number (20) 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 25437122340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40804283520).

25437122340 is an abundant number, since it is smaller than the sum of its proper divisors (56171444700).

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

25437122340 is a wasteful number, since it uses less digits than its factorization.

25437122340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156101 (or 156099 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

Adding to 25437122340 its reverse (4322173452), we get a palindrome (29759295792).

The spelling of 25437122340 in words is "twenty-five billion, four hundred thirty-seven million, one hundred twenty-two thousand, three hundred forty".