25550272 has 28 divisors (see below), whose sum is σ = 55312056. Its totient is φ = 11613440.

The previous prime is 25550267. The next prime is 25550279. The reversal of 25550272 is 27205552.

It is a self number, because there is not a number n which added to its sum of digits gives 25550272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17443 + ... + 18850.

Almost surely, 2^25550272 is an apocalyptic number.

25550272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25550272 is an abundant number, since it is smaller than the sum of its proper divisors (29761784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25550272 is a wasteful number, since it uses less digits than its factorization.

25550272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36316 (or 36306 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 25550272 is about 5054.7276880164. The cubic root of 25550272 is about 294.5315633618.

The spelling of 25550272 in words is "twenty-five million, five hundred fifty thousand, two hundred seventy-two".