25424004 has 12 divisors (see below), whose sum is σ = 59322704. Its totient is φ = 8474664.

The previous prime is 25423973. The next prime is 25424029. The reversal of 25424004 is 40042452.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059322 + ... + 1059345.

Almost surely, 2^25424004 is an apocalyptic number.

It is an amenable number.

25424004 is an abundant number, since it is smaller than the sum of its proper divisors (33898700).

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

25424004 is a wasteful number, since it uses less digits than its factorization.

25424004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118674 (or 2118672 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 25424004 is about 5042.2221291807. Note that the first 3 decimals coincide. The cubic root of 25424004 is about 294.0455757935.

Adding to 25424004 its reverse (40042452), we get a palindrome (65466456).

The spelling of 25424004 in words is "twenty-five million, four hundred twenty-four thousand, four".