25001004 has 48 divisors (see below), whose sum is σ = 68827136. Its totient is φ = 6912000.

The previous prime is 25000991. The next prime is 25001029. The reversal of 25001004 is 40010052.

25001004 = 883² + 884² + ... + 913².

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2197 + ... + 7404.

Almost surely, 2^25001004 is an apocalyptic number.

It is an amenable number.

25001004 is an abundant number, since it is smaller than the sum of its proper divisors (43826132).

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

25001004 is a wasteful number, since it uses less digits than its factorization.

25001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646 (or 9644 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 25001004 is about 5000.1003989920. The cubic root of 25001004 is about 292.4056880540.

Adding to 25001004 its reverse (40010052), we get a palindrome (65011056).

The spelling of 25001004 in words is "twenty-five million, one thousand, four".