25140239880 has 1024 divisors, whose sum is σ = 102850560000. Its totient is φ = 4877107200.

The previous prime is 25140239857. The next prime is 25140239881. The reversal of 25140239880 is 8893204152.

It is a super-2 number, since 2×25140239880² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25140239881) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 412135050 + ... + 412135110.

It is an arithmetic number, because the mean of its divisors is an integer number (100440000).

Almost surely, 2^25140239880 is an apocalyptic number.

25140239880 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 25140239880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51425280000).

25140239880 is an abundant number, since it is smaller than the sum of its proper divisors (77710320120).

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

25140239880 is a wasteful number, since it uses less digits than its factorization.

25140239880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 25140239880 in words is "twenty-five billion, one hundred forty million, two hundred thirty-nine thousand, eight hundred eighty".