25672523220 has 72 divisors (see below), whose sum is σ = 78082300296. Its totient is φ = 6827634432.

The previous prime is 25672523171. The next prime is 25672523251. The reversal of 25672523220 is 2232527652.

25672523220 is a `hidden beast` number, since 25 + 67 + 252 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6882693444 + 18789829776 = 82962^2 + 137076^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124047 + ... + 258326.

It is an arithmetic number, because the mean of its divisors is an integer number (1084476393).

Almost surely, 2^25672523220 is an apocalyptic number.

25672523220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25672523220 is an abundant number, since it is smaller than the sum of its proper divisors (52409777076).

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

25672523220 is a wasteful number, since it uses less digits than its factorization.

25672523220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382761 (or 382756 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 25672523220 in words is "twenty-five billion, six hundred seventy-two million, five hundred twenty-three thousand, two hundred twenty".