25438772 has 6 divisors (see below), whose sum is σ = 44517858. Its totient is φ = 12719384.

The previous prime is 25438741. The next prime is 25438789. The reversal of 25438772 is 27783452.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 5044516 = 4516^2 + 2246^2 .

It is a super-2 number, since 2×25438772² = 1294262241735968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179843 + ... + 3179850.

It is an arithmetic number, because the mean of its divisors is an integer number (7419643).

Almost surely, 2^25438772 is an apocalyptic number.

It is an amenable number.

25438772 is a deficient number, since it is larger than the sum of its proper divisors (19079086).

25438772 is a wasteful number, since it uses less digits than its factorization.

25438772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359697 (or 6359695 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 25438772 is about 5043.6863502799. The cubic root of 25438772 is about 294.1024986990.

The spelling of 25438772 in words is "twenty-five million, four hundred thirty-eight thousand, seven hundred seventy-two".