25017765948 has 180 divisors, whose sum is σ = 78534869952. Its totient is φ = 6917218560.

The previous prime is 25017765943. The next prime is 25017765959. The reversal of 25017765948 is 84956771052.

25017765948 is a `hidden beast` number, since 2 + 501 + 77 + 65 + 9 + 4 + 8 = 666.

It is a super-2 number, since 2×25017765948² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 25017765894 and 25017765903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25017765943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 466740 + ... + 517572.

Almost surely, 2^25017765948 is an apocalyptic number.

25017765948 is a gapful number since it is divisible by the number (28) 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 25017765948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39267434976).

25017765948 is an abundant number, since it is smaller than the sum of its proper divisors (53517104004).

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

25017765948 is a wasteful number, since it uses less digits than its factorization.

25017765948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50894 (or 50876 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 25017765948 in words is "twenty-five billion, seventeen million, seven hundred sixty-five thousand, nine hundred forty-eight".