25377730650 has 96 divisors (see below), whose sum is σ = 69966652800. Its totient is φ = 6763824000.

The previous prime is 25377730643. The next prime is 25377730687. The reversal of 25377730650 is 5603777352.

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 = 25377730596 and 25377730605.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3440166 + ... + 3447534.

It is an arithmetic number, because the mean of its divisors is an integer number (728819300).

Almost surely, 2^25377730650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25377730650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34983326400).

25377730650 is an abundant number, since it is smaller than the sum of its proper divisors (44588922150).

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

25377730650 is a wasteful number, since it uses less digits than its factorization.

25377730650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941 (or 9930 counting only the distinct ones).

The product of its (nonzero) digits is 926100, while the sum is 45.

The spelling of 25377730650 in words is "twenty-five billion, three hundred seventy-seven million, seven hundred thirty thousand, six hundred fifty".