25129052036540 has 12 divisors (see below), whose sum is σ = 52771009276776. Its totient is φ = 10051620814608.

The previous prime is 25129052036533. The next prime is 25129052036593. The reversal of 25129052036540 is 4563025092152.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25129052036491 and 25129052036500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628226300894 + ... + 628226300933.

It is an arithmetic number, because the mean of its divisors is an integer number (4397584106398).

Almost surely, 2^{25129052036540} is an apocalyptic number.

25129052036540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25129052036540 is an abundant number, since it is smaller than the sum of its proper divisors (27641957240236).

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

25129052036540 is a wasteful number, since it uses less digits than its factorization.

25129052036540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256452601836 (or 1256452601834 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 25129052036540 in words is "twenty-five trillion, one hundred twenty-nine billion, fifty-two million, thirty-six thousand, five hundred forty".