25021925 has 12 divisors (see below), whose sum is σ = 32098020. Its totient is φ = 19326720.

The previous prime is 25021903. The next prime is 25021949. The reversal of 25021925 is 52912052.

It can be written as a sum of positive squares in 6 ways, for example, as 201601 + 24820324 = 449^2 + 4982^2 .

It is not a de Polignac number, because 25021925 - 2¹⁰ = 25020901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25021894 and 25021903.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16532 + ... + 17981.

It is an arithmetic number, because the mean of its divisors is an integer number (2674835).

Almost surely, 2^25021925 is an apocalyptic number.

25021925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25021925 is a deficient number, since it is larger than the sum of its proper divisors (7076095).

25021925 is a wasteful number, since it uses less digits than its factorization.

25021925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34552 (or 34547 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 25021925 is about 5002.1920195050. The cubic root of 25021925 is about 292.4872276304.

Adding to 25021925 its reverse (52912052), we get a palindrome (77933977).

The spelling of 25021925 in words is "twenty-five million, twenty-one thousand, nine hundred twenty-five".