25251264 has 70 divisors (see below), whose sum is σ = 74868024. Its totient is φ = 8415360.

The previous prime is 25251227. The next prime is 25251287. The reversal of 25251264 is 46215252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2749 + ... + 7619.

Almost surely, 2^25251264 is an apocalyptic number.

25251264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25251264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37434012).

25251264 is an abundant number, since it is smaller than the sum of its proper divisors (49616760).

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

25251264 is an equidigital number, since it uses as much as digits as its factorization.

25251264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4895 (or 4876 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 25251264 is about 5025.0635816873. The cubic root of 25251264 is about 293.3781107034.

The spelling of 25251264 in words is "twenty-five million, two hundred fifty-one thousand, two hundred sixty-four".