25290648 has 24 divisors (see below), whose sum is σ = 68495700. Its totient is φ = 8430192.

The previous prime is 25290641. The next prime is 25290673. The reversal of 25290648 is 84609252.

It is a happy number.

25290648 is a `hidden beast` number, since 2 + 5 + 2 + 9 + 0 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×25290648³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25290641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175558 + ... + 175701.

Almost surely, 2^25290648 is an apocalyptic number.

It is an amenable number.

25290648 is an abundant number, since it is smaller than the sum of its proper divisors (43205052).

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

25290648 is a wasteful number, since it uses less digits than its factorization.

25290648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351271 (or 351264 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 25290648 is about 5028.9808112579. The cubic root of 25290648 is about 293.5305572191.

The spelling of 25290648 in words is "twenty-five million, two hundred ninety thousand, six hundred forty-eight".