25649674 has 4 divisors (see below), whose sum is σ = 38474514. Its totient is φ = 12824836.

The previous prime is 25649653. The next prime is 25649681. The reversal of 25649674 is 47694652.

It is a happy number.

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., 23590449 + 2059225 = 4857^2 + 1435^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25649674.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6412417 + ... + 6412420.

Almost surely, 2^25649674 is an apocalyptic number.

25649674 is a deficient number, since it is larger than the sum of its proper divisors (12824840).

25649674 is a wasteful number, since it uses less digits than its factorization.

25649674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824839.

The product of its digits is 362880, while the sum is 43.

The square root of 25649674 is about 5064.5507204490. The cubic root of 25649674 is about 294.9130223328.

The spelling of 25649674 in words is "twenty-five million, six hundred forty-nine thousand, six hundred seventy-four".