25421264 has 20 divisors (see below), whose sum is σ = 53731680. Its totient is φ = 11555040.

The previous prime is 25421261. The next prime is 25421267. The reversal of 25421264 is 46212452.

It is an interprime number because it is at equal distance from previous prime (25421261) and next prime (25421267).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421261) 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, 72044 + ... + 72395.

It is an arithmetic number, because the mean of its divisors is an integer number (2686584).

Almost surely, 2^25421264 is an apocalyptic number.

It is an amenable number.

25421264 is an abundant number, since it is smaller than the sum of its proper divisors (28310416).

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

25421264 is a wasteful number, since it uses less digits than its factorization.

25421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144458 (or 144452 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 25421264 is about 5041.9504162576. The cubic root of 25421264 is about 294.0350121044.

The spelling of 25421264 in words is "twenty-five million, four hundred twenty-one thousand, two hundred sixty-four".