25574820948 has 36 divisors (see below), whose sum is σ = 64653376788. Its totient is φ = 8524160640.

The previous prime is 25574820881. The next prime is 25574820977. The reversal of 25574820948 is 84902847552.

25574820948 is a `hidden beast` number, since 2 + 5 + 574 + 8 + 20 + 9 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6442951824 + 19131869124 = 80268^2 + 138318^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 25574820894 and 25574820903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475338 + ... + 526398.

It is an arithmetic number, because the mean of its divisors is an integer number (1795927133).

Almost surely, 2^25574820948 is an apocalyptic number.

It is an amenable number.

25574820948 is an abundant number, since it is smaller than the sum of its proper divisors (39078555840).

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

25574820948 is a wasteful number, since it uses less digits than its factorization.

25574820948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64984 (or 64979 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 25574820948 in words is "twenty-five billion, five hundred seventy-four million, eight hundred twenty thousand, nine hundred forty-eight".