25005135400050 has 192 divisors, whose sum is σ = 70734922925184. Its totient is φ = 5791114137600.

The previous prime is 25005135400031. The next prime is 25005135400057. The reversal of 25005135400050 is 5000453150052.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 25005135399990 and 25005135400017.

It is not an unprimeable number, because it can be changed into a prime (25005135400057) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 100552365 + ... + 100800735.

It is an arithmetic number, because the mean of its divisors is an integer number (368411056902).

Almost surely, 2^{25005135400050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25005135400050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35367461462592).

25005135400050 is an abundant number, since it is smaller than the sum of its proper divisors (45729787525134).

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

25005135400050 is a wasteful number, since it uses less digits than its factorization.

25005135400050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251453 (or 251448 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 25005135400050 in words is "twenty-five trillion, five billion, one hundred thirty-five million, four hundred thousand, fifty".