25250513 has 8 divisors (see below), whose sum is σ = 25536000. Its totient is φ = 24967008.

The previous prime is 25250501. The next prime is 25250531. The reversal of 25250513 is 31505252.

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

It is a cyclic number.

It is not a de Polignac number, because 25250513 - 2⁴ = 25250497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25250543) 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, 44093 + ... + 44661.

It is an arithmetic number, because the mean of its divisors is an integer number (3192000).

Almost surely, 2^25250513 is an apocalyptic number.

It is an amenable number.

25250513 is a deficient number, since it is larger than the sum of its proper divisors (285487).

25250513 is a wasteful number, since it uses less digits than its factorization.

25250513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25250513 is about 5024.9888557090. The cubic root of 25250513 is about 293.3752022134.

Adding to 25250513 its reverse (31505252), we get a palindrome (56755765).

The spelling of 25250513 in words is "twenty-five million, two hundred fifty thousand, five hundred thirteen".