25212315 has 8 divisors (see below), whose sum is σ = 40339728. Its totient is φ = 13446560.

The previous prime is 25212311. The next prime is 25212323. The reversal of 25212315 is 51321252.

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

It is not a de Polignac number, because 25212315 - 2² = 25212311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25212291 and 25212300.

It is not an unprimeable number, because it can be changed into a prime (25212311) 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, 840396 + ... + 840425.

It is an arithmetic number, because the mean of its divisors is an integer number (5042466).

Almost surely, 2^25212315 is an apocalyptic number.

25212315 is a deficient number, since it is larger than the sum of its proper divisors (15127413).

25212315 is a wasteful number, since it uses less digits than its factorization.

25212315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680829.

The product of its digits is 600, while the sum is 21.

The square root of 25212315 is about 5021.1866127440. The cubic root of 25212315 is about 293.2271919985.

Adding to 25212315 its reverse (51321252), we get a palindrome (76533567).

The spelling of 25212315 in words is "twenty-five million, two hundred twelve thousand, three hundred fifteen".