25152515 has 16 divisors (see below), whose sum is σ = 30881088. Its totient is φ = 19662336.

The previous prime is 25152511. The next prime is 25152521. The reversal of 25152515 is 51525152.

It is a cyclic number.

It is not a de Polignac number, because 25152515 - 2² = 25152511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25152511) 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, 49754 + ... + 50256.

It is an arithmetic number, because the mean of its divisors is an integer number (1930068).

Almost surely, 2^25152515 is an apocalyptic number.

25152515 is a deficient number, since it is larger than the sum of its proper divisors (5728573).

25152515 is a wasteful number, since it uses less digits than its factorization.

25152515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its digits is 2500, while the sum is 26.

The square root of 25152515 is about 5015.2283098579. The cubic root of 25152515 is about 292.9951774999.

Adding to 25152515 its reverse (51525152), we get a palindrome (76677667).

The spelling of 25152515 in words is "twenty-five million, one hundred fifty-two thousand, five hundred fifteen".