25022545 has 8 divisors (see below), whose sum is σ = 30838824. Its totient is φ = 19476864.

The previous prime is 25022533. The next prime is 25022573. The reversal of 25022545 is 54522052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8473921 + 16548624 = 2911^2 + 4068^2 .

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 25022545 - 2¹⁵ = 24989777 is a prime.

It is a super-2 number, since 2×25022545² = 1252255516554050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67444 + ... + 67813.

It is an arithmetic number, because the mean of its divisors is an integer number (3854853).

Almost surely, 2^25022545 is an apocalyptic number.

It is an amenable number.

25022545 is a deficient number, since it is larger than the sum of its proper divisors (5816279).

25022545 is a wasteful number, since it uses less digits than its factorization.

25022545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135299.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 25022545 is about 5002.2539919520. The cubic root of 25022545 is about 292.4896433862.

Adding to 25022545 its reverse (54522052), we get a palindrome (79544597).

The spelling of 25022545 in words is "twenty-five million, twenty-two thousand, five hundred forty-five".