1025381925 has 36 divisors (see below), whose sum is σ = 1886225380. Its totient is φ = 532085760.

The previous prime is 1025381923. The next prime is 1025381953. The reversal of 1025381925 is 5291835201.

1025381925 is a `hidden beast` number, since 102 + 538 + 19 + 2 + 5 = 666.

1025381925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 52316289 + 973065636 = 7233^2 + 31194^2 .

It is not a de Polignac number, because 1025381925 - 2¹ = 1025381923 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025381925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025381923) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53260 + ... + 69909.

Almost surely, 2^1025381925 is an apocalyptic number.

1025381925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025381925 is a deficient number, since it is larger than the sum of its proper divisors (860843455).

1025381925 is a wasteful number, since it uses less digits than its factorization.

1025381925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123222 (or 123214 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1025381925 is about 32021.5852980454. The cubic root of 1025381925 is about 1008.3900518301.

The spelling of 1025381925 in words is "one billion, twenty-five million, three hundred eighty-one thousand, nine hundred twenty-five".