25320545 has 8 divisors (see below), whose sum is σ = 31031424. Its totient is φ = 19825264.

The previous prime is 25320481. The next prime is 25320553. The reversal of 25320545 is 54502352.

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 25320545 - 2⁶ = 25320481 is a prime.

It is a super-2 number, since 2×25320545² = 1282259998194050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53639 + ... + 54108.

It is an arithmetic number, because the mean of its divisors is an integer number (3878928).

Almost surely, 2^25320545 is an apocalyptic number.

It is an amenable number.

25320545 is a deficient number, since it is larger than the sum of its proper divisors (5710879).

25320545 is a wasteful number, since it uses less digits than its factorization.

25320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107799.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 25320545 is about 5031.9524043854. The cubic root of 25320545 is about 293.6461760744.

Adding to 25320545 its reverse (54502352), we get a palindrome (79822897).

The spelling of 25320545 in words is "twenty-five million, three hundred twenty thousand, five hundred forty-five".