25052405428 has 12 divisors (see below), whose sum is σ = 44442281380. Its totient is φ = 12354610752.

The previous prime is 25052405383. The next prime is 25052405429. The reversal of 25052405428 is 82450425052.

It can be written as a sum of positive squares in 2 ways, for example, as 14851809424 + 10200596004 = 121868^2 + 100998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25052405429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42897663 + ... + 42898246.

Almost surely, 2^25052405428 is an apocalyptic number.

It is an amenable number.

25052405428 is a deficient number, since it is larger than the sum of its proper divisors (19389875952).

25052405428 is a wasteful number, since it uses less digits than its factorization.

25052405428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85795986 (or 85795984 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 25052405428 in words is "twenty-five billion, fifty-two million, four hundred five thousand, four hundred twenty-eight".