25400004 has 48 divisors (see below), whose sum is σ = 70683648. Its totient is φ = 6941088.

The previous prime is 25400003. The next prime is 25400009. The reversal of 25400004 is 40000452.

It is not an unprimeable number, because it can be changed into a prime (25400003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4642 + ... + 8505.

It is an arithmetic number, because the mean of its divisors is an integer number (1472576).

Almost surely, 2^25400004 is an apocalyptic number.

It is an amenable number.

25400004 is an abundant number, since it is smaller than the sum of its proper divisors (45283644).

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

25400004 is a wasteful number, since it uses less digits than its factorization.

25400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13184 (or 13182 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 25400004 is about 5039.8416641795. The cubic root of 25400004 is about 293.9530213242.

Adding to 25400004 its reverse (40000452), we get a palindrome (65400456).

The spelling of 25400004 in words is "twenty-five million, four hundred thousand, four".