25012642 has 8 divisors (see below), whose sum is σ = 37587996. Its totient is φ = 12483312.

The previous prime is 25012621. The next prime is 25012643. The reversal of 25012642 is 24621052.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 5112121 = 4461^2 + 2261^2 .

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 (25012643) 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, 10113 + ... + 12340.

Almost surely, 2^25012642 is an apocalyptic number.

25012642 is a deficient number, since it is larger than the sum of its proper divisors (12575354).

25012642 is a wasteful number, since it uses less digits than its factorization.

25012642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23012.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25012642 is about 5001.2640402202. The cubic root of 25012642 is about 292.4510527588.

Adding to 25012642 its reverse (24621052), we get a palindrome (49633694).

The spelling of 25012642 in words is "twenty-five million, twelve thousand, six hundred forty-two".