25015142 has 4 divisors (see below), whose sum is σ = 37522716. Its totient is φ = 12507570.

The previous prime is 25015103. The next prime is 25015147. The reversal of 25015142 is 24151052.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25015147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253784 + ... + 6253787.

It is an arithmetic number, because the mean of its divisors is an integer number (9380679).

Almost surely, 2^25015142 is an apocalyptic number.

25015142 is a deficient number, since it is larger than the sum of its proper divisors (12507574).

25015142 is a wasteful number, since it uses less digits than its factorization.

25015142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507573.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25015142 is about 5001.5139707892. The cubic root of 25015142 is about 292.4607958755.

Adding to 25015142 its reverse (24151052), we get a palindrome (49166194).

The spelling of 25015142 in words is "twenty-five million, fifteen thousand, one hundred forty-two".