25009259 has 4 divisors (see below), whose sum is σ = 27282840. Its totient is φ = 22735680.

The previous prime is 25009249. The next prime is 25009321. The reversal of 25009259 is 95290052.

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

It is not a de Polignac number, because 25009259 - 2²⁴ = 8232043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25009249) 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, 1136774 + ... + 1136795.

It is an arithmetic number, because the mean of its divisors is an integer number (6820710).

Almost surely, 2^25009259 is an apocalyptic number.

25009259 is a deficient number, since it is larger than the sum of its proper divisors (2273581).

25009259 is a wasteful number, since it uses less digits than its factorization.

25009259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273580.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 25009259 is about 5000.9258142868. The cubic root of 25009259 is about 292.4378673394.

The spelling of 25009259 in words is "twenty-five million, nine thousand, two hundred fifty-nine".