25502256 has 160 divisors (see below), whose sum is σ = 83328000. Its totient is φ = 7402752.

The previous prime is 25502251. The next prime is 25502293. The reversal of 25502256 is 65220552.

It is a super-2 number, since 2×25502256² = 1300730122179072, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106585 + ... + 106823.

It is an arithmetic number, because the mean of its divisors is an integer number (520800).

Almost surely, 2^25502256 is an apocalyptic number.

25502256 is a gapful number since it is divisible by the number (26) 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 25502256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41664000).

25502256 is an abundant number, since it is smaller than the sum of its proper divisors (57825744).

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

25502256 is a wasteful number, since it uses less digits than its factorization.

25502256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25502256 is about 5049.9758415264. The cubic root of 25502256 is about 294.3469456814.

The spelling of 25502256 in words is "twenty-five million, five hundred two thousand, two hundred fifty-six".