25142545 has 4 divisors (see below), whose sum is σ = 30171060. Its totient is φ = 20114032.

The previous prime is 25142543. The next prime is 25142563. The reversal of 25142545 is 54524152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12383361 + 12759184 = 3519^2 + 3572^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142545 - 2¹ = 25142543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25142543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514250 + ... + 2514259.

It is an arithmetic number, because the mean of its divisors is an integer number (7542765).

Almost surely, 2^25142545 is an apocalyptic number.

It is an amenable number.

25142545 is a deficient number, since it is larger than the sum of its proper divisors (5028515).

25142545 is an equidigital number, since it uses as much as digits as its factorization.

25142545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028514.

The product of its digits is 8000, while the sum is 28.

The square root of 25142545 is about 5014.2342386450. The cubic root of 25142545 is about 292.9564597286.

Adding to 25142545 its reverse (54524152), we get a palindrome (79666697).

The spelling of 25142545 in words is "twenty-five million, one hundred forty-two thousand, five hundred forty-five".