25121264 has 40 divisors (see below), whose sum is σ = 56552928. Its totient is φ = 10586880.

The previous prime is 25121263. The next prime is 25121269. The reversal of 25121264 is 46212152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121263) 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, 4994 + ... + 8670.

Almost surely, 2^25121264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25121264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28276464).

25121264 is an abundant number, since it is smaller than the sum of its proper divisors (31431664).

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

25121264 is a wasteful number, since it uses less digits than its factorization.

25121264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753 (or 3747 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 25121264 is about 5012.1117305982. Note that the first 3 decimals coincide. The cubic root of 25121264 is about 292.8737822562.

The spelling of 25121264 in words is "twenty-five million, one hundred twenty-one thousand, two hundred sixty-four".