25142131 has 4 divisors (see below), whose sum is σ = 28733872. Its totient is φ = 21550392.

The previous prime is 25142107. The next prime is 25142141. The reversal of 25142131 is 13124152.

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

It is a cyclic number.

It is not a de Polignac number, because 25142131 - 2⁹ = 25141619 is a prime.

It is a super-2 number, since 2×25142131² = 1264253502442322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25142099 and 25142108.

It is not an unprimeable number, because it can be changed into a prime (25142141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795860 + ... + 1795873.

It is an arithmetic number, because the mean of its divisors is an integer number (7183468).

Almost surely, 2^25142131 is an apocalyptic number.

25142131 is a deficient number, since it is larger than the sum of its proper divisors (3591741).

25142131 is an equidigital number, since it uses as much as digits as its factorization.

25142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591740.

The product of its digits is 240, while the sum is 19.

The square root of 25142131 is about 5014.1929560000. The cubic root of 25142131 is about 292.9548517683.

Adding to 25142131 its reverse (13124152), we get a palindrome (38266283).

The spelling of 25142131 in words is "twenty-five million, one hundred forty-two thousand, one hundred thirty-one".