25725546 has 128 divisors (see below), whose sum is σ = 74649600. Its totient is φ = 6367680.

The previous prime is 25725533. The next prime is 25725547. The reversal of 25725546 is 64552752.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25725546.

It is not an unprimeable number, because it can be changed into a prime (25725547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95500 + ... + 95768.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^25725546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25725546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37324800).

25725546 is an abundant number, since it is smaller than the sum of its proper divisors (48924054).

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

25725546 is a wasteful number, since it uses less digits than its factorization.

25725546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 315 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 25725546 is about 5072.0356859943. The cubic root of 25725546 is about 295.2035213408.

It can be divided in two parts, 2572 and 5546, that added together give a palindrome (8118).

The spelling of 25725546 in words is "twenty-five million, seven hundred twenty-five thousand, five hundred forty-six".