25435122140 has 24 divisors (see below), whose sum is σ = 53416754160. Its totient is φ = 10173477888.

The previous prime is 25435122113. The next prime is 25435122157. The reversal of 25435122140 is 4122153452.

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, 668879 + ... + 705881.

It is an arithmetic number, because the mean of its divisors is an integer number (2225698090).

Almost surely, 2^25435122140 is an apocalyptic number.

25435122140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25435122140 is an abundant number, since it is smaller than the sum of its proper divisors (27981632020).

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

25435122140 is a wasteful number, since it uses less digits than its factorization.

25435122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71381 (or 71379 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25435122140 its reverse (4122153452), we get a palindrome (29557275592).

The spelling of 25435122140 in words is "twenty-five billion, four hundred thirty-five million, one hundred twenty-two thousand, one hundred forty".