25523972 has 6 divisors (see below), whose sum is σ = 44666958. Its totient is φ = 12761984.

The previous prime is 25523959. The next prime is 25523977. The reversal of 25523972 is 27932552.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 1943236 = 4856^2 + 1394^2 .

It is not an unprimeable number, because it can be changed into a prime (25523977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190493 + ... + 3190500.

It is an arithmetic number, because the mean of its divisors is an integer number (7444493).

Almost surely, 2^25523972 is an apocalyptic number.

It is an amenable number.

25523972 is a deficient number, since it is larger than the sum of its proper divisors (19142986).

25523972 is a wasteful number, since it uses less digits than its factorization.

25523972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380997 (or 6380995 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 25523972 is about 5052.1254932949. The cubic root of 25523972 is about 294.4304706420.

The spelling of 25523972 in words is "twenty-five million, five hundred twenty-three thousand, nine hundred seventy-two".