25256015 has 8 divisors (see below), whose sum is σ = 31126560. Its totient is φ = 19658592.

The previous prime is 25256003. The next prime is 25256017. The reversal of 25256015 is 51065252.

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

It is a cyclic number.

It is not a de Polignac number, because 25256015 - 2¹⁶ = 25190479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25256017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68075 + ... + 68444.

It is an arithmetic number, because the mean of its divisors is an integer number (3890820).

Almost surely, 2^25256015 is an apocalyptic number.

25256015 is a deficient number, since it is larger than the sum of its proper divisors (5870545).

25256015 is a wasteful number, since it uses less digits than its factorization.

25256015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136561.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25256015 is about 5025.5362897904. The cubic root of 25256015 is about 293.3965091487.

The spelling of 25256015 in words is "twenty-five million, two hundred fifty-six thousand, fifteen".