25577472 has 96 divisors (see below), whose sum is σ = 71547840. Its totient is φ = 8110080.

The previous prime is 25577441. The next prime is 25577473. The reversal of 25577472 is 27477552.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 25577472.

It is not an unprimeable number, because it can be changed into a prime (25577473) 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, 141222 + ... + 141402.

It is an arithmetic number, because the mean of its divisors is an integer number (745290).

Almost surely, 2^25577472 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 25577472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35773920).

25577472 is an abundant number, since it is smaller than the sum of its proper divisors (45970368).

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

25577472 is a wasteful number, since it uses less digits than its factorization.

25577472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 209 counting only the distinct ones).

The product of its digits is 137200, while the sum is 39.

The square root of 25577472 is about 5057.4175228075. The cubic root of 25577472 is about 294.6360425804.

The spelling of 25577472 in words is "twenty-five million, five hundred seventy-seven thousand, four hundred seventy-two".