25630442 has 4 divisors (see below), whose sum is σ = 38445666. Its totient is φ = 12815220.

The previous prime is 25630439. The next prime is 25630457. The reversal of 25630442 is 24403652.

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., 14145121 + 11485321 = 3761^2 + 3389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6407609 + ... + 6407612.

Almost surely, 2^25630442 is an apocalyptic number.

25630442 is a deficient number, since it is larger than the sum of its proper divisors (12815224).

25630442 is a wasteful number, since it uses less digits than its factorization.

25630442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815223.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 25630442 is about 5062.6516767402. The cubic root of 25630442 is about 294.8392957896.

The spelling of 25630442 in words is "twenty-five million, six hundred thirty thousand, four hundred forty-two".