25004381 has 4 divisors (see below), whose sum is σ = 26091552. Its totient is φ = 23917212.

The previous prime is 25004359. The next prime is 25004401. The reversal of 25004381 is 18340052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25004381 - 2¹⁰ = 25003357 is a prime.

It is a super-2 number, since 2×25004381² = 1250438138386322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1087147 = 25004381 / (2 + 5 + 0 + 0 + 4 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25004311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543551 + ... + 543596.

It is an arithmetic number, because the mean of its divisors is an integer number (6522888).

Almost surely, 2^25004381 is an apocalyptic number.

It is an amenable number.

25004381 is a deficient number, since it is larger than the sum of its proper divisors (1087171).

25004381 is a wasteful number, since it uses less digits than its factorization.

25004381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087170.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 25004381 is about 5000.4380808085. The cubic root of 25004381 is about 292.4188529860.

The spelling of 25004381 in words is "twenty-five million, four thousand, three hundred eighty-one".