25053515 has 8 divisors (see below), whose sum is σ = 30345840. Its totient is φ = 19855072.

The previous prime is 25053481. The next prime is 25053517. The reversal of 25053515 is 51535052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25053515 is a prime.

It is a super-2 number, since 2×25053515² = 1255357227710450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25053517) 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, 22880 + ... + 23949.

It is an arithmetic number, because the mean of its divisors is an integer number (3793230).

Almost surely, 2^25053515 is an apocalyptic number.

25053515 is a deficient number, since it is larger than the sum of its proper divisors (5292325).

25053515 is a wasteful number, since it uses less digits than its factorization.

25053515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46941.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 25053515 is about 5005.3486392059. The cubic root of 25053515 is about 292.6102635400.

Adding to 25053515 its reverse (51535052), we get a palindrome (76588567).

The spelling of 25053515 in words is "twenty-five million, fifty-three thousand, five hundred fifteen".