25340452500 has 240 divisors, whose sum is σ = 81095990976. Its totient is φ = 6105600000.

The previous prime is 25340452493. The next prime is 25340452517. The reversal of 25340452500 is 525404352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14931652 + ... + 14933348.

Almost surely, 2^25340452500 is an apocalyptic number.

25340452500 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 25340452500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40547995488).

25340452500 is an abundant number, since it is smaller than the sum of its proper divisors (55755538476).

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

25340452500 is a wasteful number, since it uses less digits than its factorization.

25340452500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 25340452500 its reverse (525404352), we get a palindrome (25865856852).

The spelling of 25340452500 in words is "twenty-five billion, three hundred forty million, four hundred fifty-two thousand, five hundred".