25137428 has 12 divisors (see below), whose sum is σ = 45063732. Its totient is φ = 12262080.

The previous prime is 25137421. The next prime is 25137443. The reversal of 25137428 is 82473152.

It can be written as a sum of positive squares in 2 ways, for example, as 6492304 + 18645124 = 2548^2 + 4318^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25137394 and 25137403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25137421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76475 + ... + 76802.

It is an arithmetic number, because the mean of its divisors is an integer number (3755311).

Almost surely, 2^25137428 is an apocalyptic number.

It is an amenable number.

25137428 is a deficient number, since it is larger than the sum of its proper divisors (19926304).

25137428 is a wasteful number, since it uses less digits than its factorization.

25137428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153322 (or 153320 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 25137428 is about 5013.7239652777. The cubic root of 25137428 is about 292.9365842557.

The spelling of 25137428 in words is "twenty-five million, one hundred thirty-seven thousand, four hundred twenty-eight".