25112015 has 16 divisors (see below), whose sum is σ = 32747520. Its totient is φ = 18416160.

The previous prime is 25111987. The next prime is 25112027. The reversal of 25112015 is 51021152.

It is not a de Polignac number, because 25112015 - 2¹⁰ = 25110991 is a prime.

It is a super-2 number, since 2×25112015² = 1261226594720450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25111984 and 25112002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319 + ... + 7208.

It is an arithmetic number, because the mean of its divisors is an integer number (2046720).

Almost surely, 2^25112015 is an apocalyptic number.

25112015 is a deficient number, since it is larger than the sum of its proper divisors (7635505).

25112015 is a wasteful number, since it uses less digits than its factorization.

25112015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8582.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 25112015 is about 5011.1889806712. The cubic root of 25112015 is about 292.8378349923.

Adding to 25112015 its reverse (51021152), we get a palindrome (76133167).

The spelling of 25112015 in words is "twenty-five million, one hundred twelve thousand, fifteen".