25214642 has 4 divisors (see below), whose sum is σ = 37821966. Its totient is φ = 12607320.

The previous prime is 25214617. The next prime is 25214669. The reversal of 25214642 is 24641252.

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

It can be written as a sum of positive squares in only one way, i.e., 24196561 + 1018081 = 4919^2 + 1009^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6303659 + ... + 6303662.

Almost surely, 2^25214642 is an apocalyptic number.

25214642 is a deficient number, since it is larger than the sum of its proper divisors (12607324).

25214642 is a wasteful number, since it uses less digits than its factorization.

25214642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12607323.

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

The square root of 25214642 is about 5021.4183255331. The cubic root of 25214642 is about 293.2362129694.

Adding to 25214642 its reverse (24641252), we get a palindrome (49855894).

The spelling of 25214642 in words is "twenty-five million, two hundred fourteen thousand, six hundred forty-two".