25509793050 has 432 divisors, whose sum is σ = 84606459840. Its totient is φ = 5536252800.

The previous prime is 25509793039. The next prime is 25509793123. The reversal of 25509793050 is 5039790552.

25509793050 is a `hidden beast` number, since 2 + 5 + 509 + 7 + 93 + 0 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 25509792987 and 25509793005.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 481316824 + ... + 481316876.

Almost surely, 2^25509793050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25509793050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42303229920).

25509793050 is an abundant number, since it is smaller than the sum of its proper divisors (59096666790).

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

25509793050 is a wasteful number, since it uses less digits than its factorization.

25509793050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 45.

The spelling of 25509793050 in words is "twenty-five billion, five hundred nine million, seven hundred ninety-three thousand, fifty".