25142145 has 48 divisors (see below), whose sum is σ = 47496960. Its totient is φ = 11321856.

The previous prime is 25142141. The next prime is 25142153. The reversal of 25142145 is 54124152.

It is not a de Polignac number, because 25142145 - 2² = 25142141 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57849 + ... + 58281.

It is an arithmetic number, because the mean of its divisors is an integer number (989520).

Almost surely, 2^25142145 is an apocalyptic number.

It is an amenable number.

25142145 is a deficient number, since it is larger than the sum of its proper divisors (22354815).

25142145 is a wasteful number, since it uses less digits than its factorization.

25142145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 527 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 25142145 is about 5014.1943520370. The cubic root of 25142145 is about 292.9549061441.

Adding to 25142145 its reverse (54124152), we get a palindrome (79266297).

The spelling of 25142145 in words is "twenty-five million, one hundred forty-two thousand, one hundred forty-five".