25124642 has 8 divisors (see below), whose sum is σ = 38563536. Its totient is φ = 12270132.

The previous prime is 25124633. The next prime is 25124647. The reversal of 25124642 is 24642152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25124647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145988 + ... + 146159.

It is an arithmetic number, because the mean of its divisors is an integer number (4820442).

Almost surely, 2^25124642 is an apocalyptic number.

25124642 is a deficient number, since it is larger than the sum of its proper divisors (13438894).

25124642 is a wasteful number, since it uses less digits than its factorization.

25124642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292192.

The product of its digits is 3840, while the sum is 26.

The square root of 25124642 is about 5012.4487029794. The cubic root of 25124642 is about 292.8869090279.

Adding to 25124642 its reverse (24642152), we get a palindrome (49766794).

The spelling of 25124642 in words is "twenty-five million, one hundred twenty-four thousand, six hundred forty-two".