25405265 has 8 divisors (see below), whose sum is σ = 30513408. Its totient is φ = 20306160.

The previous prime is 25405253. The next prime is 25405277. The reversal of 25405265 is 56250452.

It is an interprime number because it is at equal distance from previous prime (25405253) and next prime (25405277).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25405265 - 2¹⁰ = 25404241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9530 + ... + 11900.

It is an arithmetic number, because the mean of its divisors is an integer number (3814176).

Almost surely, 2^25405265 is an apocalyptic number.

It is an amenable number.

25405265 is a deficient number, since it is larger than the sum of its proper divisors (5108143).

25405265 is a wasteful number, since it uses less digits than its factorization.

25405265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 25405265 is about 5040.3635781558. The cubic root of 25405265 is about 293.9733150229.

The spelling of 25405265 in words is "twenty-five million, four hundred five thousand, two hundred sixty-five".