25152015 has 16 divisors (see below), whose sum is σ = 45992448. Its totient is φ = 11498016.

The previous prime is 25152013. The next prime is 25152031. The reversal of 25152015 is 51025152.

It is not a de Polignac number, because 25152015 - 2¹ = 25152013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 25151982 and 25152000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25152013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119667 + ... + 119876.

It is an arithmetic number, because the mean of its divisors is an integer number (2874528).

Almost surely, 2^25152015 is an apocalyptic number.

25152015 is a deficient number, since it is larger than the sum of its proper divisors (20840433).

25152015 is a wasteful number, since it uses less digits than its factorization.

25152015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239558.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25152015 is about 5015.1784614309. The cubic root of 25152015 is about 292.9932360299.

Adding to 25152015 its reverse (51025152), we get a palindrome (76177167).

The spelling of 25152015 in words is "twenty-five million, one hundred fifty-two thousand, fifteen".