25204087 has 4 divisors (see below), whose sum is σ = 25235320. Its totient is φ = 25172856.

The previous prime is 25204073. The next prime is 25204093. The reversal of 25204087 is 78040252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25204087 - 2¹⁵ = 25171319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25204187) 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, 14373 + ... + 16030.

It is an arithmetic number, because the mean of its divisors is an integer number (6308830).

Almost surely, 2^25204087 is an apocalyptic number.

25204087 is a deficient number, since it is larger than the sum of its proper divisors (31233).

25204087 is an equidigital number, since it uses as much as digits as its factorization.

25204087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31232.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 25204087 is about 5020.3672176445. The cubic root of 25204087 is about 293.1952904477.

The spelling of 25204087 in words is "twenty-five million, two hundred four thousand, eighty-seven".