25049642 has 4 divisors (see below), whose sum is σ = 37574466. Its totient is φ = 12524820.

The previous prime is 25049641. The next prime is 25049669. The reversal of 25049642 is 24694052.

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., 23030401 + 2019241 = 4799^2 + 1421^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25049599 and 25049608.

It is not an unprimeable number, because it can be changed into a prime (25049641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262409 + ... + 6262412.

Almost surely, 2^25049642 is an apocalyptic number.

25049642 is a deficient number, since it is larger than the sum of its proper divisors (12524824).

25049642 is a wasteful number, since it uses less digits than its factorization.

25049642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524823.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 25049642 is about 5004.9617381155. The cubic root of 25049642 is about 292.5951846451.

The spelling of 25049642 in words is "twenty-five million, forty-nine thousand, six hundred forty-two".