25352561 has 8 divisors (see below), whose sum is σ = 27513024. Its totient is φ = 23222160.

The previous prime is 25352557. The next prime is 25352563. The reversal of 25352561 is 16525352.

It is a happy number.

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

It is not a de Polignac number, because 25352561 - 2² = 25352557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25352563) 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, 5741 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (3439128).

Almost surely, 2^25352561 is an apocalyptic number.

It is an amenable number.

25352561 is a deficient number, since it is larger than the sum of its proper divisors (2160463).

25352561 is a wasteful number, since it uses less digits than its factorization.

25352561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031.

The product of its digits is 9000, while the sum is 29.

The square root of 25352561 is about 5035.1326695530. The cubic root of 25352561 is about 293.7698887394.

The spelling of 25352561 in words is "twenty-five million, three hundred fifty-two thousand, five hundred sixty-one".