25275280 has 40 divisors (see below), whose sum is σ = 59105592. Its totient is φ = 10051584.

The previous prime is 25275251. The next prime is 25275287. The reversal of 25275280 is 8257252.

It can be written as a sum of positive squares in 4 ways, for example, as 355216 + 24920064 = 596^2 + 4992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (25275287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14622 + ... + 16258.

Almost surely, 2^25275280 is an apocalyptic number.

25275280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25275280 is an abundant number, since it is smaller than the sum of its proper divisors (33830312).

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

25275280 is a wasteful number, since it uses less digits than its factorization.

25275280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25275280 is about 5027.4526352816. The cubic root of 25275280 is about 293.4710900250.

The spelling of 25275280 in words is "twenty-five million, two hundred seventy-five thousand, two hundred eighty".