25142537 has 12 divisors (see below), whose sum is σ = 29373696. Its totient is φ = 21457800.

The previous prime is 25142527. The next prime is 25142543. The reversal of 25142537 is 73524152.

It is a happy number.

It is not a de Polignac number, because 25142537 - 2⁸ = 25142281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25142527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11912 + ... + 13862.

It is an arithmetic number, because the mean of its divisors is an integer number (2447808).

Almost surely, 2^25142537 is an apocalyptic number.

It is an amenable number.

25142537 is a deficient number, since it is larger than the sum of its proper divisors (4231159).

25142537 is a wasteful number, since it uses less digits than its factorization.

25142537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2221 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 25142537 is about 5014.2334409160. The cubic root of 25142537 is about 292.9564286570.

Adding to 25142537 its reverse (73524152), we get a palindrome (98666689).

The spelling of 25142537 in words is "twenty-five million, one hundred forty-two thousand, five hundred thirty-seven".