25142742 has 12 divisors (see below), whose sum is σ = 54475980. Its totient is φ = 8380908.

The previous prime is 25142731. The next prime is 25142771. The reversal of 25142742 is 24724152.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 698392 + ... + 698427.

It is an arithmetic number, because the mean of its divisors is an integer number (4539665).

Almost surely, 2^25142742 is an apocalyptic number.

25142742 is an abundant number, since it is smaller than the sum of its proper divisors (29333238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25142742 is a wasteful number, since it uses less digits than its factorization.

25142742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396827 (or 1396824 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 25142742 is about 5014.2538826828. The cubic root of 25142742 is about 292.9572248629.

Adding to 25142742 its reverse (24724152), we get a palindrome (49866894).

The spelling of 25142742 in words is "twenty-five million, one hundred forty-two thousand, seven hundred forty-two".